q_id stringlengths 6 6 | title stringlengths 4 294 | selftext stringlengths 0 2.48k | category stringclasses 1
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a5otdq | Often times, I read about game developers placing superfluous data within a game's files to take up disc space. A text file or audio file, for example, which serves no other purpose. Why was this? | I can't think of any examples, but I know I've heard of this somewhere. Edit: I should clarify what I mean: When I say 'superfluous', I mean it has no apparent purpose to the game. Not even an unused thing or a planned thing that later got scraped. In particular, I recall one instance of a text file that simply had ran... | Technology | explainlikeimfive | {
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"text": [
"Sometimes taking up space *is* doing something for the game. Ex. a CD has a single spiral containing data going from the inside to the edge of the disc. However due to the way it works, reading from the edge of the disc (closer to the end o... | [
"url"
] | [
"url"
] |
a5p0io | Why do lightbulbs burst with light before going out? | Technology | explainlikeimfive | {
"a_id": [
"eboatiu"
],
"text": [
"Incandescent bulb filaments get thinner and thinner as they are used, literally evaporating. Eventually some spot gets to the point of positive feedback: It gets thinner, so it gets hotter, so it evaporates faster, so it gets thinner,... As this reaches its conclusion, ... | [
"url"
] | [
"url"
] | |
a5p8x5 | how those finger sensors at the doctors office can tell what my oxygen levels are at. | Technology | explainlikeimfive | {
"a_id": [
"ebob08a",
"ebob225"
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"text": [
"Red blood cells are a different colour when it's saturated with different levels of oxygen. So the light bounce off your red blood cells and the probe sees what colour it is.",
"Those sensors work by light absorption. Different wavelengths of light ar... | [
"url"
] | [
"url"
] | |
a5pzt9 | How do mobile games get away with advertising blatantly fake gameplay? | I'm not referring as much to the legality of the issue, as I understand it would be difficult to prosecute. I'm more curious as to how these adverts don't seem to be in violation of Google Play's own policies (I can't speak for the App Store since I've only ever used Android). A lot of these games promote fake CGI game... | Technology | explainlikeimfive | {
"a_id": [
"eboj29i",
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"text": [
"It's not exclusive to mobile apps. You see it quite a bit in regular videogame commercials, I can remember them from the 90s showing little to no actual gameplay, or stuff that doesn't happen in the game sometimes, or bits and pieces of FMV sequences, etc... | [
"url"
] | [
"url"
] |
a5q1jy | What is YouTube Rewind? | Technology | explainlikeimfive | {
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"eboie5o",
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"text": [
"A video which you tube makes every year to show the collective trash created on youtube in that year featuring the youtubers who created that trash. ^Disclamer: If you make good content then you will not be part of it.",
"YT rewind is a collaboration ... | [
"url"
] | [
"url"
] | |
a5tw8l | How do they provide oxygen for the "space people" on the ISS so that they don't need to dock with refilling spacecrafts all the time? | Technology | explainlikeimfive | {
"a_id": [
"ebp5gd9",
"ebp6bhv",
"ebqo4hi"
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"text": [
"It recycles the air and scrubs the CO2 from it. Also recycles water from waste. It is very efficient.",
"First of all they do dock with spacecrafts all the time to refill their supply of among other oxygen. They have big tanks on the sp... | [
"url"
] | [
"url"
] | |
a5xb1t | Why are game updates so big when the code is probably just a few hundered MB? | Technology | explainlikeimfive | {
"a_id": [
"ebpz1eo"
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"text": [
"> Why is Fallout 76's day one update 51GB? Because Bethesda screwed up, same reason their beta had people clicking the play button in the launcher and the whole game deleted itself. Fallout 76 is a bad reference Normally large patches come with new models and textures, ... | [
"url"
] | [
"url"
] | |
a5xkl3 | How are perfectly looping gifs made from real videos? | Technology | explainlikeimfive | {
"a_id": [
"ebq76qu"
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"text": [
"there's two main ways from what I've seen, you can either get to a section of the video and replay it backwards or find two frames, one from the start, one from the end and leave them as the first and last frame."
],
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a5xvj0 | Why are plural checks online often missed out or completely ignored? Example: You have 1 notifications | I see it so often and it makes me wonder, is it just laziness or does it have a legitimate reason? | Technology | explainlikeimfive | {
"a_id": [
"ebq580o",
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"text": [
"Usually when programming you preplan a sentence like this: \"You have & 1 notifications\". The & 1 then will get replaced. You have one sentence that works for every number. If you want the plural / singular, you would need two different sentences and a p... | [
"url"
] | [
"url"
] |
a5zp5f | Speed squares used in carpentry. | I am a 1st year apprentice and I have only used my speed square as a straightedge. It says hip and valley and has numbers all over it, but I haven't used them once. | Technology | explainlikeimfive | {
"a_id": [
"ebqpxae"
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"text": [
"The hip/valley potion is used for building rafters, specifically, it's for measuring the angles for a [hip roof]( URL_0 )."
],
"score": [
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"text_urls": [
[
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a60i5j | Why are DJs important? What’s wrong with a playlist? | Not trying to offend anyone. Just genuinely curious | Technology | explainlikeimfive | {
"a_id": [
"ebqpwcz",
"ebqpxp1"
],
"text": [
"A DJ is supposed to feel the room, feel the crowd and be able to adjust the songs they play on the fly to play whatever is the \"best\" song next for the patrons in the venue. They may even, and often do, cut songs down, and start a new one in early if on... | [
"url"
] | [
"url"
] |
a61f8i | How did Houston know what conditions would be like for a human on the moon to prepare the space suits just right to protect the astronauts during apollo 11? | Technology | explainlikeimfive | {
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"ebr2nub",
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"text": [
"Nasa was very woried about the suits during the first moon mission. The astronauts were instructed to stay close to the capsule in case of emergency. Plant a flag get some samples and get out. They also where n... | [
"url"
] | [
"url"
] | |
a6288d | How effective is regenerative braking on electric vehicles? | Technology | explainlikeimfive | {
"a_id": [
"ebr6cyl"
],
"text": [
"Roughly 60-70% efficient overall. That is considering the kinetic energy of the moving vehicle and how much of it can be converted into kinetic movement of the vehicle later, not the efficiency of the braking in turning movement into electricity."
],
"score": [
... | [
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a62mdu | Why do ads on paid subscriptions play better than the shows themselves? | To be more specific...I select a show to watch, I suffer through the ad, and then when the show I stayed to watch comes around, an error saying playback failure; cc hulu . | Technology | explainlikeimfive | {
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"ebr6wq8"
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"text": [
"Everyone in a given area gets the same set of ads so they are kept handy by the servers. Not everyone watches the same shows so they might be stored in a more distant, slower location. An analogy is a hardware store with rows and rows of different parts you can order, w... | [
"url"
] | [
"url"
] |
a62ti2 | Why aren't you allowed cellphones and other wave emitting equipment in a mine? | Technology | explainlikeimfive | {
"a_id": [
"ebraj6v"
],
"text": [
"Cell phones do not work underground due to all the rock shielding the radio signals. So there is no reason to bring it with you. However in a mine there are lots of dangers that can potentially be triggered by cell phones. They often use radio signals to set off explosi... | [
"url"
] | [
"url"
] | |
a6445y | How did Planet Earth II get their shots without disturbing the animals? | I find it hard to believe that there are people there while filming the bobcats fighting and if there isn’t anyone there do they hide the cameras to match the environment? | Technology | explainlikeimfive | {
"a_id": [
"ebrg80c",
"ebrmjxf",
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"text": [
"They usually either use large telephoto lenses (like the Canon 1200mm L: URL_1 - this one is designed for photography, but it can be used with compatible digital movie cameras as well), or use concealment tents ( URL_0 ). Sometimes you use ... | [
"url"
] | [
"url"
] |
a64dio | Google Maps uses Mercator projection when zoomed out, giving a distorted view of Earth. Why does nothing seem to change as I zoom into those distorted areas? Surely there should be areas of Siberia, Canada, etc that look fucked up when zoomed in? | Technology | explainlikeimfive | {
"a_id": [
"ebrknsd",
"ebrp1gf"
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"text": [
"First, Google Maps doesn't use a Mercator projection when zoomed out... at least not today on my browser. I get a 3-d spherical \"satellite view\". But anyway, what Mercator does wrong is that the scale depends on latitude: polar parts of the Earth look b... | [
"url"
] | [
"url"
] | |
a64uvd | How does inntagram know I recently bought a guitar without typing in guitar on their app? | The same thing happens to me with amazon and YouTube I won’t even search for guitar on any of their apps but they somehow know I own a guitar now. It honestly creeps me out a lot. | Technology | explainlikeimfive | {
"a_id": [
"ebrob6r",
"ebrpb7e",
"ebrpe3h"
],
"text": [
"Metadata. Basically, anything you search up or look at is collected and sold to marketing companies which in turn are seen through advertising.",
"You probably researched it somehow, on Google or Facebook (FB owns Insta) for instance. T... | [
"url"
] | [
"url"
] |
a653hl | Why, in almost 2019, do we not have total network coverage for mobile/cell phones? | Technology | explainlikeimfive | {
"a_id": [
"ebrqeur"
],
"text": [
"For the large part: money. In some areas, primarily remote/rural areas, the costs of building out and operating cellular network towers may exceed the additional revenue the company expects from building/operating such towers, thus there is little or no incentive to bui... | [
"url"
] | [
"url"
] | |
a65sis | What is the difference between WiFi and Bluetooth? | Technology | explainlikeimfive | {
"a_id": [
"ebs4qt9"
],
"text": [
"In general terms, WiFi is a protocol used to connect various devices to a central network, and is intended to take the place of in-wall cabling. Bluetooth is a protocol for devices to connect to each other and for peripherals to connect to devices, and usually takes the... | [
"url"
] | [
"url"
] | |
a664dd | What causes a car's head gasket to blow and why do certain car brands seem to have a bigger issue with this than other brands? | Technology | explainlikeimfive | {
"a_id": [
"ebs9sqm",
"ebs714f"
],
"text": [
"For manufacturing reasons, the cylinder head is fabricated as a separate piece of metal than the cylinder body. These two pieces of metal are bolted together, to enable maintenance, at a point where there are very high combustion gas pressures. These high... | [
"url"
] | [
"url"
] | |
a66fpr | Why do PC and monitors/TV still have a VGA port? | Technology | explainlikeimfive | {
"a_id": [
"ebsb1t0",
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],
"text": [
"VGA is pretty common with legacy equipment, especially in the business space. It's less common in the consumer space, however.",
"Because there is a demand for support for legacy components. There are still quite a few VGA monitors and ... | [
"url"
] | [
"url"
] | |
a66qj8 | Software Architecture | I saw a video where Bill Gates states he still helps with the architecture for Microsoft. What is software architecture? | Technology | explainlikeimfive | {
"a_id": [
"ebsf7c2",
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],
"text": [
"Software is built of various logic and data components that interact with each other. Architecture design is determining at a very high level what these components should be, what they should do and how they should talk to each other.",
"Architecture ... | [
"url"
] | [
"url"
] |
a67b31 | How did spacecrafts come back to Earth from the Moon? Did the lack of Earth-like atmosphere on the Moon interfere somehow? | Technology | explainlikeimfive | {
"a_id": [
"ebsjzgt",
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"text": [
"Landing on the moon without an atmosphere was harder than getting off the moon without an atmosphere. Having an atmosphere means that as you go faster, you get more resistance to acceleration as the air has less time to move out of the way and let you pas... | [
"url"
] | [
"url"
] | |
a67hfq | How do Yubikeys work? | Technology | explainlikeimfive | {
"a_id": [
"ebsnueo"
],
"text": [
"There is a tiny computer inside. When you touch the \"go\" spot a circuit senses your electrical capacitance (you are not as good an insulator as air). This circuit tells the computer to \"go\". A fixed program in the computer reads some data from the USB port it's plug... | [
"url"
] | [
"url"
] | |
a6a5pd | Why do URLs have %20 in them to represent a space? | Technology | explainlikeimfive | {
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"ebt81kt",
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"ebtqkoj",
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"text": [
"Computers don't understand letters, they only understand numbers. So back in the early days of computers, someone sat down and associated each letter and punctuation mark they want... | [
"url"
] | [
"url"
] | |
a6cxzt | Why did the Brits ship IPA instead of other barrel-aged beers? | I learned that the extra hops in IPAs acted as a preservative that made the beer suitable for the many months' voyage from England to India. I also realize that those IPAs were shipped in barrels. Today, there are many less hoppy beers suitable for long barrel aging. Why, then, was the hops of IPA required in colonial ... | Technology | explainlikeimfive | {
"a_id": [
"ebttq1r"
],
"text": [
"Nowdays we have efficient techniques for controlling microbial growth. At the time, they barely understood what microbes were, and many people didn't even know they existed. So, without having the techniques we have to preserve the beer, hops were about it. It's a food-... | [
"url"
] | [
"url"
] |
a6dimc | How do people animate nowadays? | Basically people like Namark , TheOdd1sOut, and JaidenAnimations seem to be able to animate their videos in such a beautiful way, what I don't get is how they do it so well in (relatively) little time. I'm comparing this to animated cartoon movies mosly. So the question is, do people actually draw all of these frame by... | Technology | explainlikeimfive | {
"a_id": [
"ebtx7tt",
"ebtxjyj"
],
"text": [
"They draw keyframes in software and the software does the inbetween. I think. I don't know who those guys you mentioned are though",
"Most modeling is 3d now. So they take a 3d model, move it into poses, then the animation software moves between the p... | [
"url"
] | [
"url"
] |
a6f9iw | Why are semi-auto marksman rifles not as accurate as bolt-actions? | Technology | explainlikeimfive | {
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"text": [
"There are a lot less variables with a bolt action. They are simple and strong, and that makes for less ‘play’ in the action. Semi autos use a gas system, rechamber based on recoil ... | [
"url"
] | [
"url"
] | |
a6fc1k | Why is 24/25 fps okay for video but painfully low for gaming? | Technology | explainlikeimfive | {
"a_id": [
"ebufnou",
"ebua5ze",
"ebucqke"
],
"text": [
"It has to do with a difference in how the frames are formed. Individual movie frames are very blurry, but their blur isn't just a random fuzziness but instead something called \"motion blur\". That kind of blur contains information because ... | [
"url"
] | [
"url"
] | |
a6fuxn | Why some manufacturers can offer devices with insane GPS precision? I thought this was reserved for military. | I spent 2 hours repainting the lines on a rugby field yesterday. Plenty of time to think about automating this quite annoying task using an RC Truck combined with a drone controller+GPS. I searched the internet and found some manufacturers who claim that their automatic line marker robots can achieve a precision of +/-... | Technology | explainlikeimfive | {
"a_id": [
"ebug8jl",
"ebufm20"
],
"text": [
"\"Military grade GPS precision\" was (the absence/reversal of) an encryption algorithm being applied to the GPS signal to make it very slightly incorrect in a reversible manner. During one of the Bush administrations, don't quite remember which, the troop... | [
"url"
] | [
"url"
] |
a6h6by | Why we still need to do the whole "left eye/right eye, option 1 or option 2" when getting glasses? Why isn't there a machine that can test this just by looking at our eyes? | Technology | explainlikeimfive | {
"a_id": [
"ebus1kq",
"eburv4x"
],
"text": [
"Vision is a really subjective experience, affected by many factors including the exact shape of lots of different parts of the eye. You've got two choices: 1. Get a complicated, expensive machine that gives you an OK pair of glasses; or 2. Buy a simple, c... | [
"url"
] | [
"url"
] | |
a6ivqt | How are Lightning and USB-C connectors able to work in both orientations? | Besides the physical symmetry, of course. Other plugs like USB-A prevent you from using the wrong orientation because they wouldn't work that way anyway. What enables USB-C and Lightning to do so? | Technology | explainlikeimfive | {
"a_id": [
"ebv72kh"
],
"text": [
"No, it's really the physical symmetry. USB-C was designed to be symmetric because the Lightning solution (which was non-standard) was very well received by users. It takes twice as many connectors, more parts, more complexity, more gold; but yet users find it's very wor... | [
"url"
] | [
"url"
] |
a6j0l5 | What's the difference between an arduino and a raspberry pi? | What's their marketing? What can one do that the other can't? Which one is more popular? Which one is better? When do you use the arduino, when the RPi? Thank You so much!! | Technology | explainlikeimfive | {
"a_id": [
"ebv84zq",
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],
"text": [
"Pi is basically a low resource PC, mostly used for single task setups (dev enviornment, router replacement, streaming service, etc). Arduino is a microcontoller for sensors. Controls robot arms, sensors, and has options for computing tasks.",
"Oh! I g... | [
"url"
] | [
"url"
] |
a6k1c2 | How much of the internet that I see is limited by my location in the world? | Is there a Chinese internet I just have never seen? It just seems like every website is in English and most news is about the US (that's where I'm from) | Technology | explainlikeimfive | {
"a_id": [
"ebvi9xb",
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"text": [
"If you're in a free country, you can read nearly every public site in the whole Internet. Including Chinese ones.",
"Well, the US is a disproportional part of the Internet. Head over to URL_0 . If you can't see that, you can't see China. Of course you... | [
"url"
] | [
"url"
] |
a6muwx | what is the difference between disk capacity and density with a SSD? | I'm trying to upgrade my system and have a vague idea. Want to clarify before I buy. | Technology | explainlikeimfive | {
"a_id": [
"ebw91ei"
],
"text": [
"Capacity is what you really want, that's how much total storage the drive provides Density is about how much storage we can fit in one flash chip. Higher density chips enable higher capacity drives in the same size, or drives with the same capacity but fewer chips Densi... | [
"url"
] | [
"url"
] |
a6nke6 | Why do integers have different sizes depending on the architecture of the computer? (64bit, 32bit) | Example: 64bit has integers the size of 8bytes and 32bit has the size of 4bytes | Technology | explainlikeimfive | {
"a_id": [
"ebwih97",
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"text": [
"That is by definition of an integer. From the Kerningham and Ritchie The C Programming Language, 2nd edition: The range of both int and float depends on the machine you are using; 16-bit ints, which lie between -32768 and +32767, are common, as are 32-bit... | [
"url"
] | [
"url"
] |
a6ojy8 | What is an API | Technology | explainlikeimfive | {
"a_id": [
"ebwpspx",
"ebwmnxh"
],
"text": [
"Think of it like you and your dog are two different computer programs. An API is like the words your dog has been trained to understand. If you say \"sit\" you know what to expect and the dog knows what to do and how to respond. On the other hand, you hav... | [
"url"
] | [
"url"
] | |
a6p1km | How do they replace lights on the top of tall temples? | Currently in Bangkok and absolutely do not understand how they replace the bulbs on the very top of these temples, specifically Wat Arun. I can't imagine there is an easy ladder access haha, do they literally scale these things? | Technology | explainlikeimfive | {
"a_id": [
"ebwqvtm"
],
"text": [
"They are hollow. You walk up stairs or ride a small elevator. At the top there are handholds for climbing the last bit. Source: that's how they replace the light bulbs on the TV station tower I worked at."
],
"score": [
7
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a6qa3k | Just A Random Thought: How did they find out that it was Plutonium/Uranium that was the perfect catalyst for a WMD? | Technology | explainlikeimfive | {
"a_id": [
"ebwzq2g",
"ebx2ydn"
],
"text": [
"It's easy to narrow down a list of the most suitable elements by looking at their properties. Uranium-235 and plutonium-239 undergo fission readily and were thus considered, among other elements. Finding the absolute best is just a means of trial and erro... | [
"url"
] | [
"url"
] | |
a6qflo | Why are the three primary colors red, yellow and blue, but computer system color palettes use red, green and blue as their base colors? | Technology | explainlikeimfive | {
"a_id": [
"ebx12b6",
"ebx18ab",
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],
"text": [
"Red, green and blue are the primary colors of light.. Combining all three gives you white Red (magenta) yellow and blue (cyan) is the primary colors of pigment. Combining all three is viewed as black (or more technically such a clusterfuck ... | [
"url"
] | [
"url"
] | |
a6qkqc | How does the process for animated movies even start and how do they make everything run perfectly together? | Technology | explainlikeimfive | {
"a_id": [
"ebx8fwj"
],
"text": [
"Movies started out as individual film photographs. Movie cameras captured live action, but once you had that long strip of film you could do stuff. Some early \"special effects\" involved inking black-and-white film prints to turn one object a color. From that experimen... | [
"url"
] | [
"url"
] | |
a6qnnl | What happens when you click the 'cash back' button when you pay with a card at checkout? Is that a credit card only thing? How does it work? (Ive only ever had a debit card, if that matters). | Technology | explainlikeimfive | {
"a_id": [
"ebx2885",
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"text": [
"It's a **debit** card only thing. Basically, the shop overcharges you by an amount of your choosing, and hands you cash as \"change\" from the purchase. This way, you can grab some walking around cash without having to go to an ATM. Your bank sees it as a... | [
"url"
] | [
"url"
] | |
a6rk1s | How do cameras capture high quality photos in the dark or during the night? What is needed to do this? | Technology | explainlikeimfive | {
"a_id": [
"ebxamke"
],
"text": [
"The more sensitive the sensor is, the higher quality you'll get in low light. Having a larger sensor helps with this since you have more light hitting each individual pixel. Also, a larger and higher quality lens that can focus more light onto the sensor helps. The alte... | [
"url"
] | [
"url"
] | |
a6rscr | If cell phones are based off radio, how do we still get service deep inside buildings, etc.? | Peaked my interest whilst pooping and browsing Reddit via LTE... | Technology | explainlikeimfive | {
"a_id": [
"ebxcn9r"
],
"text": [
"Some of the radio signals actually can penetrate buildings well. Especially signals below 1000 MHZ. Also some buildings have signal boosters in them that most people don’t even know about."
],
"score": [
5
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a6rtsl | How does Bluetooth Low Energy Work? | I've seen it on my phone before. I have a Samsung S9+ and I look into settings and says it uses Bluetooth Low Energy. Or LE. It uses it's microphone to find devices to connect to and to transfer data files with. What is Bluetooth Low Energy exactly? It says it will use a bit of battery (3500mAh Capacity from the phone)... | Technology | explainlikeimfive | {
"a_id": [
"ebxi2gq"
],
"text": [
"Bluetooth is a way to communicate to other devices wireless, The most common application on a cellphone is to connect to headsets, spearker etc Bluetooth low energy is the latest bluetooth standard that do what is say and used less power. The amount is usages depend on ... | [
"url"
] | [
"url"
] |
a6sih7 | Why isn’t Braille just raised letters? Wouldn’t it make more sense if it was? | Technology | explainlikeimfive | {
"a_id": [
"ebxjzni",
"ebxnfeg",
"ebxwrx6",
"ebydxp4"
],
"text": [
"Not for reading it quickly. It's designed so that each letter is distinctive by touch - Braille readers don't have to feel each letter individually, they can just run their fingers over a row and read it all at once. Another ... | [
"url"
] | [
"url"
] | |
a6sjvb | Why is Windows 32-bit referred to as x86 and not x32 while 64-bit is referred to as x64? | Technology | explainlikeimfive | {
"a_id": [
"ebxkoca",
"ebxlukf",
"ebxki8x",
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],
"text": [
"The 8086 was an early Intel processor which led to the 186, 286, 386, and 486. The architecture was called x86 and anything compatible with it was x86 compatible. These were some of the earliest and most wide spread 32 bit pr... | [
"url"
] | [
"url"
] | |
a6swcj | How do wireless chargers work? | Technology | explainlikeimfive | {
"a_id": [
"ebxogj5"
],
"text": [
"> I know that charging a battery is essentially moving electrons back into the battery That's not really how it works. Electrons aren't \"spent\" when you use power from electricity. The electrons are all still there. No electrons have been lost. Electrons don't go back... | [
"url"
] | [
"url"
] | |
a6tnuw | How do subtitles on streaming services work? | what is the technology used for the subtitles on Netflix and Hulu? Have they actually typed out the script to everything streaming on those platforms? Thanks | Technology | explainlikeimfive | {
"a_id": [
"ebxum03"
],
"text": [
"Yes, someone did have to sit down and type them out. Usually it's done by the studio for closed captioning (on TV) or subtitles for the DVD/blu-ray release, then they just send the files along when they license the content to streaming services. For Netflix Original stu... | [
"url"
] | [
"url"
] |
a6ua46 | why law enforcement uses polygraphs but they are not admissible in court | If polygraphs are not reliable enough to be admissible in court then why do law enforcement use them to help eliminate suspects or possibly confirm their suspicions? | Technology | explainlikeimfive | {
"a_id": [
"eby9jsr",
"ebykza1"
],
"text": [
"It is a useful tool for finding pressure points. There are two types of modern police interrogations - reid method and interrogative. Interrogative - That is basically questioning people until you catch them in lies. Knowing which questions to ask is very... | [
"url"
] | [
"url"
] |
a6wa9r | What does Netflix have to gain with "are you still watching?" | Why does Netflix have this feature? Surely without it there would be more watch minutes, better numbers, and all around just beneficial to Netflix. So why add something that stops the customer from using the service? Not only that, but why make it uncontrollable by the user? There is no way of turning it off as far as ... | Technology | explainlikeimfive | {
"a_id": [
"ebyidqu",
"ebyiq5m",
"ebyif51",
"ebylb4e",
"ebyia5c",
"ebyl0w4"
],
"text": [
"A reduction in required server bandwidth. If people fall asleep and the stream keeps going, it's adding demand that could otherwise be allocated to users who are actively watching.",
"I like ... | [
"url"
] | [
"url"
] |
a6xs9a | Why do USB connectors have 2 sides? Every time I go to plug one in I have to turn it around... | Technology | explainlikeimfive | {
"a_id": [
"ebywavp",
"ebytxpd",
"ebytfes"
],
"text": [
"The thing is to realise that USB cables weren't created out of the blue; they were a solution to a problem, and that problem was the frankly nightmare situation that existed in the 90's of different connection standards. The rear panel of a... | [
"url"
] | [
"url"
] | |
a70jva | Why do phone batteries seem to die faster in colder weather? | Technology | explainlikeimfive | {
"a_id": [
"ebzcydh",
"ebzrs7e",
"ebzsee7"
],
"text": [
"Because lithium ion batteries perform worse in the cold. They need some heat in order for the ion flow (which makes the battery work) to work properly.",
"Remember that although a battery produces electricity, it itself is a chemical-ba... | [
"url"
] | [
"url"
] | |
a71cq2 | How do they make these piped cookies with truffle centers? | A Costco cookie assortment made its way to my office for the holidays, and these mint chocolate cookies were among them. I'm an above-average home baker, but I cannot for the life of me figure out how they get the truffle center into what looks like a piped cookie. [Pictures of the cookies here]( URL_0 ). The stripes a... | Technology | explainlikeimfive | {
"a_id": [
"ebzmvgs"
],
"text": [
"So there's basically a bigger \"central\" nozzle that pipes in the truffle center, and then this big nozzle is surrounded by smaller nozzles for the alternating mint and truffle. All of this stuff is fed through yet one more nozzle which drops and lifts the actual cooki... | [
"url"
] | [
"url"
] |
a71qhl | if heat creates energy, why have humans not yet tried to harness the power of the earths core? | Technology | explainlikeimfive | {
"a_id": [
"ebzlaef",
"ebzlfhi"
],
"text": [
"...we do, it's called [Geothermal Power]( URL_0 ) So yes, it's plausible, because we're doing it.",
"We do harness this \"geothermal\" energy in places where it's plausible to do so. Usually you have to bore *really* deep (miles) to find temperatures ... | [
"url"
] | [
"url"
] | |
a71ufn | Nueral Networks. | Technology | explainlikeimfive | {
"a_id": [
"ebzq4us",
"ebzq9mm"
],
"text": [
"I saw a TV programme years ago that showed a \"machine\" built out of matchboxes and coloured beads that could be taught to play tic tac toe. Turns out that it was effectively a mechanical neural network designed in the '60s named MENACE. Details here: UR... | [
"url"
] | [
"url"
] | |
a73jws | After seeing Peter Jackson's Restored Footage, why is a lot of old footage look like it's in fast-forward? | Technology | explainlikeimfive | {
"a_id": [
"ec018yl",
"ec00a85",
"ec006es"
],
"text": [
"So, video of all sorts is just a series of still images that gets changed really quickly. Each image is called a *frame*, and how many images you see per second is called the *framerate*. Old footage, as people have noted, used hand-cranked... | [
"url"
] | [
"url"
] | |
a745zd | Why does Redsit use so much Data? | Whenever I use Reddit for an extended period of time while not connected to a WiFi source, I can use up to 40 megabytes within a half hour period. Why? | Technology | explainlikeimfive | {
"a_id": [
"ec051wh",
"ec080bt"
],
"text": [
"Reddit needs to load a ton of images and text when scrolling, just like Twitter does. The images can take up a lot of space overtime.",
"A lot of images on reddit are 1/4 to 1/2 of a megabyte. A bunch of comments and their associated metadata can be 1... | [
"url"
] | [
"url"
] |
a74hb3 | why does old black and white video footage almost always look sped up. | Technology | explainlikeimfive | {
"a_id": [
"ec07rpx"
],
"text": [
"Back then, they were cranking the film while they were filming it. This is before technology could automate the timing. They figured that cranking a little too fast worked better for the story. Or maybe they just thought that the film was boring so they were trying to s... | [
"url"
] | [
"url"
] | |
a75k4x | How do flash drives keep data stored when they have no power | Technology | explainlikeimfive | {
"a_id": [
"ec0gpmi",
"ec0h8yc"
],
"text": [
"The flash storage device use what is known as a floating gate transistor. That is a transistor where one of the wires are not connected to anything. Therefore you can charge this wire and then later check the charge of the wire by checking the state of th... | [
"url"
] | [
"url"
] | |
a7ac3m | Will a Youtube video with a still background require the same processing power as a moving video ? | Technology | explainlikeimfive | {
"a_id": [
"ec1fesx",
"ec1krtm"
],
"text": [
"No, Youtube doesn't send the video as a whole and sends every pixel, even if it doesn't change, they will send the changes between frames, so a completely still video uses less data and therefore involves less work. How big the difference at the user-side... | [
"url"
] | [
"url"
] | |
a7aq6b | Why can't the mouse cursor move off screen on the left side when it can on the right? | Technology | explainlikeimfive | {
"a_id": [
"ec1hg43",
"ec1hk2v"
],
"text": [
"The cursor is actually only one pixel. The top left pixel of the pointy thing So when you run it to the right most of the pointyctjing can run off the screen but not the left row of pixels of the cursor. When you go to the bottom, the top row stops.",
... | [
"url"
] | [
"url"
] | |
a7ba86 | During the late 80s to mid 90s, every home computer came with their own operating system. Now almost all home computers comes with just Windows, why? | Technology | explainlikeimfive | {
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],
"text": [
"The short answer: because Microsoft, lead by Bill Gates, engaged in illegal anti-competitive actions to drive competitors out of business and establis... | [
"url"
] | [
"url"
] | |
a7biv2 | How do vinyl records store sound, and how does a needle reproduce that sound? | I collect records yet I've never understood this basic question about them. I've read many explication but I've never found one that explains it plainly and completely. Thanks in advance everyone! | Technology | explainlikeimfive | {
"a_id": [
"ec1nf22",
"ec1qbc5"
],
"text": [
"Records are etched with very tiny physical bumps in the plastic. The needle is very delicate and when it runs over a bump, it vibrates. The bumps on the record are placed and sized very precisely to vibrate the needle at the exact pitch of the recorded so... | [
"url"
] | [
"url"
] |
a7d4kg | With so much YouTube drama, it seems there would be a huge market for an alternative site. Why isn't there one? | Technology | explainlikeimfive | {
"a_id": [
"ec20fep",
"ec20w9o",
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"ec218aw",
"ec20tn1",
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"ec24edt",
"ec241f9"
],
"text": [
"Twitch is branching off with features that support content creators who are searching for a alternative but that's all as far as i know... | [
"url"
] | [
"url"
] | |
a7di2a | Why does the Google Play Store app require Google services to be installed as opposed to being installed with an .apk like any other app? | Technology | explainlikeimfive | {
"a_id": [
"ec2av3a",
"ec2gaad"
],
"text": [
"It is to prevent phone manufacturers to add the Google Play Store and have it work without agreeing to Google's terms which include bundling some Google Apps with the phone.",
"Politics. You know how Microsoft had a monopoly over Operating Systems? Al... | [
"url"
] | [
"url"
] | |
a7gtjt | What makes a product "Military Grade"? | Technology | explainlikeimfive | {
"a_id": [
"ec2uvv9",
"ec2vnv0",
"ec2uymv",
"ec2yl5p"
],
"text": [
"The IMPLICATION is that the product is supposed to be durable, but this is just marketing. Anyone who's served will tell you how funny they find that term -- we know that \"military grade\" actually means \"procured from the ... | [
"url"
] | [
"url"
] | |
a7hbtz | How are music and audio recordings synced in the music videos? | Technology | explainlikeimfive | {
"a_id": [
"ec33gm9"
],
"text": [
"The finished audio recording of the song is played back on loudspeakers during filming. It’s loud, and there’s plenty of noise on set from foot steps, fans, directors comments, etc. The audio from the film is replaced by the officially released recording during post-pro... | [
"url"
] | [
"url"
] | |
a7ijhk | how does an mri/ct scan see inflammation? | What is it about inflammation that makes it pop up on these scans? | Technology | explainlikeimfive | {
"a_id": [
"ec3uwtl"
],
"text": [
"In contrast to what other replies have said, on a CT scan, blood has basically the same density as water and since most of our soft tissues are highly perfused with blood and our cells are full of water, most tissues look the same on a CT scan with the exception of air,... | [
"url"
] | [
"url"
] |
a7k486 | How does a vinyl wrap (e.g. for a car) wrap around the curves of the car so seamlessly without folding over itself? | Technology | explainlikeimfive | {
"a_id": [
"ec3lo2l",
"ec43jdh"
],
"text": [
"When they make the wrap it gets cut and scored so that it doesn't kink when it gets applied. Its also fairly stretchy so as they apply it they can stretch it to prevent bubbles and kinks. As they apply it they keep the sticky side wet so that it only actu... | [
"url"
] | [
"url"
] | |
a7l9dj | How do fast food places with multiple drive-thrus that merge into one keep track of who ordered what? | For example, you have Lane A and Lane B. In lane A, you have person C and person D. In lane B you have person E (myself) Person C orders first. Right after that person E (me) orders. Then person D orders. Logically, Person C then E then D should pull up. But person D cuts person E off. How does this not mix the orders ... | Technology | explainlikeimfive | {
"a_id": [
"ec3sthd",
"ec4iwqs"
],
"text": [
"They take a picture of your car, then it’s attached to your order on the screen at the first window where you pay. Then the order you pay in is the order your second window is given so they give you the right food.",
"Chic-filet has this system and th... | [
"url"
] | [
"url"
] |
a7lyox | why do some letters like "a" or "g" look different on a computer than when normally written? | Technology | explainlikeimfive | {
"a_id": [
"ec460yt",
"ec3yw4x",
"ec402i2",
"ec3zgma",
"ec42nf6",
"ec4cdxo",
"ec4a9y5"
],
"text": [
"A number of reasons, some of which go back hundreds of years. More or less in chronological order, they are: \\- Legibility: Handwriting conventions are a compromise between readab... | [
"url"
] | [
"url"
] | |
a7naa0 | Is therea difference between a "3.5ghz cpu" and a "2.6ghz cpu but with turbo boost up to 3.5"? | Technology | explainlikeimfive | {
"a_id": [
"ec47mff"
],
"text": [
"Turbo boost is a marketing term for dynamic clock speed in CPUs. Intel chips equipped with the technology normally operate a certain speed but can dynamically increase to the Turbo-boost speed when under load. The reason the chips can't operate at this speed all the tim... | [
"url"
] | [
"url"
] | |
a7nar7 | How does credit card skimming work? | Technology | explainlikeimfive | {
"a_id": [
"ec47brg",
"ec4a8be"
],
"text": [
"It's essentially a \"man in the middle\" attack. Normally when you swipe your card the machine reads it, and transmits your info. To setup a skim the criminal inserts a special machine into the reader, which also looks like a reader so you won't notice. Y... | [
"url"
] | [
"url"
] | |
a7pa4r | Excited for the SpaceX and Blue Origin rocket launches, but what's the actual purpose for this series of launches? Are they just launching and landing immediately for the sake of testing? | Technology | explainlikeimfive | {
"a_id": [
"ec4p8s7",
"ec4xrjx"
],
"text": [
"SpaceX have been contracted by the US Air Force to launch 10 new GPS satellites into orbit. The first of these satellites are now sitting on the pad on top of a Falcon 9 rocket ready to launch into orbit. This is a fully operational flight with the main o... | [
"url"
] | [
"url"
] | |
a7q3cy | How are telephone numbers assigned when you purchase a new cell phone? | I'm a bit of a Luddite; I only recently got a cell phone and my husband was the one who purchased it and took care of all the details involved. I read a story online a few years ago when someone purchased a cell phone (circa 2003) and the number she was assigned used to belong to a celebrity, so she received some calls... | Technology | explainlikeimfive | {
"a_id": [
"ec4wxg2"
],
"text": [
"Yep, there are a finite number of telephone numbers (after all, there are only so many ways you can combine 10 digits, and a bunch of those combinations aren't actually allowed as phone numbers), and numbers are recycled regularly. Each telephone carrier gets blocks of ... | [
"url"
] | [
"url"
] |
a7r5z6 | How do IT workers (sorry for the generic term) “see” a user’s web traffic? If I accidentally click a NSFW link using Apollo while connected to my jobs wifi, can they see that? | Technology | explainlikeimfive | {
"a_id": [
"ec55bud",
"ec553fm",
"ec53krc",
"ec53sp2"
],
"text": [
"So, there are two answers. First, yes - they can see that. They very likely can't actually see what is at the link unless they go there (most web traffic is encrypted these days, including Apollo's, AFAIK), but they can see t... | [
"url"
] | [
"url"
] | |
a7t7ki | why do airlines insist on having dual-type headphone jacks? | It doesn’t seem to make sense these days with most people carrying their own headphones. What is the benefit of having the dual-type jacks? Is it so people don’t steal the complimentary headphones? | Technology | explainlikeimfive | {
"a_id": [
"ec5kbi0",
"ec5k7v2"
],
"text": [
"Some people suspect it's a vestigial choice based on when airlines used air-pressure type headsets instead of electrical. They had 2 tubes one for left and one for right in the seat that you would plug a headset into. URL_0 The most likely reason for usin... | [
"url"
] | [
"url"
] |
a7uj20 | How does a computer (running a modern operating system) boot up? | What happens between pressing the power button and being able to use a fully functioning operating system? | Technology | explainlikeimfive | {
"a_id": [
"ec5vbpy",
"ecbdim6"
],
"text": [
"It does a POST which is a check of the very basics of the computer. If you fire up an oldie you get to see it, usually just white plain letters on a black screen as it counts how much RAM it has available and checks what the processor is and such. In a mo... | [
"url"
] | [
"url"
] |
a7vy6a | what's the difference between a router and a modem | Technology | explainlikeimfive | {
"a_id": [
"ec65g0a"
],
"text": [
"A modem converts data flows between two different physical media, typically between coax cable and Ethernet twisted pair. A router looks at the data and decides if the data needs to move from one place to another in order for two or more systems to communicate with one ... | [
"url"
] | [
"url"
] | |
a7x50f | What is the difference between white box and black box testing? | Technology | explainlikeimfive | {
"a_id": [
"ec6cl6i",
"ec6d6l2"
],
"text": [
"Black box describes a device which you can view its inputs and outputs, but not its internal workings. Therefore black box testing means testing something only by feeding it various inputs and then analysing the outputs. For example, black box testing a w... | [
"url"
] | [
"url"
] | |
a7yhej | tried posting on r/askscience but it kept getting removed... Today I read"Biohacker injects himself with DNA sequence made from Bible and Koran verses"how is this possible? | Technology | explainlikeimfive | {
"a_id": [
"ec6lgda"
],
"text": [
"> how is this possible to do outside of a well equipped lab He didn't do it outside of a lab. Right from your own article: > The student then built the proteins **in a lab** before injecting himself Emphasis mine. > and how do you go about arranging dna into words He di... | [
"url"
] | [
"url"
] | |
a807qn | Why do drive up ATMs have Braille? | Technology | explainlikeimfive | {
"a_id": [
"ec6yj6y",
"ec6yji8",
"ec6zy7y",
"ec6ykwl",
"ec6yonb"
],
"text": [
"The buttons are mass produced, it doesn't make any sense to produce a different mold, different production runs, and a different product line just to save material from some bumps. They just use the same button... | [
"url"
] | [
"url"
] | |
a8392j | How does a business router handle internal traffic better than a consumer one ? | So this question comes up a lot at work, I've tried explaining that consumer routers are designed for fast upload and download, but find it hard to explain why they don't work so well for internal traffic. Does anyone have a good simple explanation ? | Technology | explainlikeimfive | {
"a_id": [
"ec7o8hj"
],
"text": [
"Business routers usually have a great deal more customization than consumer grade routers do. Consumer routers are designed to plug and play, with minimal things that you can screw up. Businesses usually need more flexibility. For example, I run a business grade router ... | [
"url"
] | [
"url"
] |
a85e0s | What does a cpu core do when no program is using it? | Normally one core is noticeably higher than the rest cause it is handling windows and maybe some background processes. But all other cores are also being uses, very minimally, but something is happening. Just curious as to what a core does when not in use by a program or the OS. | Technology | explainlikeimfive | {
"a_id": [
"ec83oi2"
],
"text": [
"Unused cores are \"idling\". They are basically doing nothing (actually doing \"NOOP\"=\"no-operation\" commands every cycle, afaik) while waiting for some work to arrive. Modern CPUs are often able to underclock them on the fly, i.e. run idle cores at lower speeds, whi... | [
"url"
] | [
"url"
] |
a865u2 | Why did it used to be mandatory to add “www” in front of a web address for it to pull up correctly, but now it’s optional? | When I was younger, it used to be that if you didn’t type “www” in front of a web address, the page wouldn’t load properly, but now it’s optional. I’ve read that the “www” part has to do with the webpage’s server, but servers are all different, and it used to be like...a collective thing? So does that mean people used ... | Technology | explainlikeimfive | {
"a_id": [
"ec8adw5",
"ec8aoz0",
"ec8auzk",
"ec8bafu"
],
"text": [
"Some websites started pointing URL_0 to their website to make it easier and it just kinda caught on. You would think that teaching people that you have to go to WWW. to get to the website would be easy enough, but you would b... | [
"url"
] | [
"url"
] |
a884iv | why aren't there multiple versions of the Internet run by different tech companies? | Technology | explainlikeimfive | {
"a_id": [
"ec8n8pa",
"ec8nm5c",
"ec8qso7",
"ec8nv6n",
"ec8plwt",
"ec8n8al",
"ec8v296"
],
"text": [
"The internet is just millions of computers connected to each other. It's not actually run by anyone, and too widely diffuse to be controlled by one company. Although Google's searc... | [
"url"
] | [
"url"
] | |
a8a3if | Why did switching back and forth between channels help make that one naughty channel come in clearer as a kid? | Technology | explainlikeimfive | {
"a_id": [
"ec8zntx"
],
"text": [
"Because on old cable devices when you changed to a pornography channel It would take it a second to check and see if you were a paid subscriber. In that time while the machine was checking for verification the channel would come in clear but then scramble once they foun... | [
"url"
] | [
"url"
] | |
a8bgir | How does a music box work? (My 5 year old just asked me, and I realized I actually have no idea) | Technology | explainlikeimfive | {
"a_id": [
"ec9be0g"
],
"text": [
"Inside the box there is a comb of tiny tuning forks. When plucked, each fork makes a single note. There is a drum and there are many spikes on the drum. When the drum turns, usually by a clockwork mechanism you wind, the spikes pluck the forks. The spikes are arranged i... | [
"url"
] | [
"url"
] | |
a8br1p | If visible light is just a small part of the electromagnetic spectrum, can we build a camera that can "see" other frequencies on the spectrum, e.g. so we can see where certain frequencies are being transmitted from? | Technology | explainlikeimfive | {
"a_id": [
"ec9e1or",
"ec9edcu"
],
"text": [
"We can and do. This is exactly what radar, thermal imaging cameras, UV cameras, and X-ray detectors do. Space probes and telescopes are often mounted with cameras that are looking for things other than visible light",
"We do! [Here’s]( URL_1 ) some im... | [
"url"
] | [
"url"
] | |
a8bvcw | Does Google have to pay to advertise the Pixel 3 on YouTube? | Technology | explainlikeimfive | {
"a_id": [
"ec9f9up",
"ec9ficy"
],
"text": [
"I have no specific knowledge about this specific example, but usually large companies that have divisions like that (like a company that makes products but also owns a magazine, etc) will not have to pay “per se” but have to track accounting and maybe mov... | [
"url"
] | [
"url"
] | |
a8bw9a | Is the Moon a better launching base than the Earth for space exploration? | Technology | explainlikeimfive | {
"a_id": [
"ec9f3s7",
"ec9f94v"
],
"text": [
"Yes, for the reasons you say. However, the problem for that is that the entire space program is located on the Earth, and you have to bring an awful lot to the moon before you can launch from there. So for the foreseeable future, we're going to be launchi... | [
"url"
] | [
"url"
] | |
a8e2ru | How do touchscreens work? And why do some surfaces work while others do not? | Technology | explainlikeimfive | {
"a_id": [
"ec9w1vd",
"ec9wh2p"
],
"text": [
"There are two basic kinds of touch screens. Resistive and capacitive. Resistive detect pressure and so you can use almost anything to interact with them but they can usually only detect a single touch at a time. Capacitive screens are what is used in almo... | [
"url"
] | [
"url"
] | |
a8e37t | How exactly does the “Year 2038 Problem” pose a threat to us in the future? | Technology | explainlikeimfive | {
"a_id": [
"ec9wz7q"
],
"text": [
"A lot of computers count time as \"How many seconds has it been since midnight of January 1st, 1970?\" and store that number in a piece of data that can only count up to about 2 billion. The issue occurs when we end up at a time frame that's beyond 2 billion seconds aft... | [
"url"
] | [
"url"
] | |
a8enp6 | How do headless guitars and basses work and why would you want one over a regular model? | Technology | explainlikeimfive | {
"a_id": [
"eca6tn5"
],
"text": [
"On a normal guitar, string tension (i.e. string pitch) is controlled via tuning pegs located on the head of the guitar. A headless guitar removes the head entirely, and the strings are attached at a fixed point where the neck ends. String tension is instead controlled b... | [
"url"
] | [
"url"
] | |
a8gnyb | How do applications such as Steam allocate space in a hard drive without downloading anything? | So I bought R6S and the game file size is 70.1 Gigabytes. It took 6-7 minutes to just "Allocate disk space" when I went over to the file where the game would be downloaded upon clicking on the folder and right clicking it the folder comes up at 0 bytes. So how do applications allocate space in a hard drive before even ... | Technology | explainlikeimfive | {
"a_id": [
"ecaj1wv"
],
"text": [
"Steam is simply reserving a certain ammount of space on the hard drive so it knows it has enough space to store the files when they download and to make sure no other applications fill the space during the download. It also helps keep fragmentation to a minimum when dow... | [
"url"
] | [
"url"
] |
a8h2r0 | What does each browser extension (.com, .gov, .edu, etc.) do? Does it make a difference? How/when did they come about? | Technology | explainlikeimfive | {
"a_id": [
"ecalpw3",
"ecb38nf",
"ecaloy9",
"ecalvci",
"ecaop8n",
"ecalurn"
],
"text": [
"traditionally .com was commercial. .org was non profit or some other organization. .net was network related site. .edu was educational. .gov was government website. some of these are reserved lik... | [
"url"
] | [
"url"
] | |
a8id1r | Do movies with more special effects take up more space than a movie of equal resultion but no special effects | Could the colour make the file size larger? How how dis work | Technology | explainlikeimfive | {
"a_id": [
"ecawu8s"
],
"text": [
"If you're talking about video compression, typically it compares differences between each frame and only includes the parts that have changed. In a movie scene with two people talking, most of the background won't change. That means the compression can be higher. Most C... | [
"url"
] | [
"url"
] |
a8jeeq | How did they hide the camera in this shoot? | @01:52 URL_0 | Technology | explainlikeimfive | {
"a_id": [
"ecb8dzm",
"ecb7zjn",
"ecbcadi",
"ecbists",
"ecbdatp",
"ecbgmmd",
"ecbc6eo",
"ecb5do3",
"ecbkd01"
],
"text": [
"I may be able to give some insight as I've been doing freelance VFX for several years. The film \"Birdman\" had a similar effect in the make-up room, ... | [
"url"
] | [
"url"
] |
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