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[Question] [ I am working on a story about a person who was raised on an earth-like planet and later moves to our earth. The planet he is from specializes in fruit juice and alcohol making, in specific, wine. When he gets to earth, he attempts to grow some of his grapes to make grape-juice to ferment. The problem is ...
[Question] [ On planet Dalia, there exists a creature that supplies Dalians with horrific fear. The Tayan. Tayan is similar to the Earth pitcher plant, and employs similar methods to capture prey. ***XENOBIOLOGY*** The Tayan embeds itself in the soil of planet surface, with only its octopus like tentacles and and te...
[Question] [ In our modern society we can assemble a working missile with materials available in most supermarkets: check out [nitrogen triiodide](https://www.wikipedia.org/wiki/Nitrogen_triiodide). My question is about medieval people: could they manage to build a missile? (assuming they have the necessary technical...
[Question] [ **Note: This question was heavily rewritten for two reasons: Firstly, many of the answers were not exactly what I asked for; Secondly, both the original question and all the answers to it were from before ChatGPT, which heavily altered the perception of what an algorithmic AI can do.** I want the setting...
[Question] [ ## The Context My mermaids are amphibians that have legs that allow them to walk on land. They live in a lagoon similar to the barrier reef. The reef is roughly 1,000 square miles, and its average depth is 100 feet with a few small islands dotting the lagoon. The Mermaids are at a technological level sim...
[Question] [ This probably sounds like a ridiculous question but it is actually very simple. It seems possible to me to modify a motorcycle to be weaponized and indeed very deadly here on Earth (if you had the technology to put machine guns or a missile on the front), it seems like a motorcycle is a good way to rush ...
[Question] [ When in space, the amount of force required to move goes down drastically, due to the virtual lack of drag. In this environment, would be feasible for engines in space (more specifically belonging to generation ships) to use steam? [Answer] Using steam to propel yourself in space obviously requires t...
[Question] [ I have a small number of people (300ish) that live in marshlands/bog/wetlands environment. They are infertile, live about two thirds of a normal lifespan, and have hallucinations, poor memory, lethargy. Remove them from the environment and they recover mentally, although the physical symptoms can be perm...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w...
[Question] [ ### Backstory: Space travel is commonplace and cheap -- space combat isn't uncommon either, whether it be two space fleets sallying forth into battle or a mercenaries defending a merchant ship from a small force of pirates. These space battles involve aiming at targets and shooting, which require gunners...
[Question] [ In the backstory for my world, the British and French royal families married into one another in the early-mid 18th Century. By the early 20th Century, what would the main language be for official (political/academic/military) purposes? The scenarios I can think of are: 1. One language dominates the othe...
[Question] [ It was difficult to sum the entire question into the title, but here's **more context**: I'm working on a proof of concept for a game where you are racing vehicles rally raid style across Antarctica and / or tundra where "the race" takes weeks, (including fixing the vehicle and sleep). Were it just this,...
[Question] [ **I've been designing bird-like creatures that both fly and walk using their legs, saving the trouble of growing extra muscle mass for both. Because of this they have an odd look for birds:** They have scrawny upper bodies sitting on top of muscular waists with feathered legs. What would be their wings h...
[Question] [ In my fantasy world, the magic system pretty much makes metal armour and weapons obsolete. The magic system's specifics aren't important, just note that the magic system allows the users to 'penetrate' and 'destroy' man-made materials, AND objects that come from the Earth, such as stone. Only living thin...
[Question] [ For a Matrix-type future I want to feed people via solid food. This is to keep all their internal organs working properly. The idea is to feed them an endless kebab that is held together along its length with a string. They aren't aware of this as they are living in a fantasy simulated world. There is no...
[Question] [ I have read questions such as [these](https://worldbuilding.stackexchange.com/questions/56697/how-horribly-would-this-alien-die-in-earthly-conditions) [two](https://worldbuilding.stackexchange.com/questions/32129/what-would-happen-to-a-high-pressure-creature-in-a-low-pressure-atmosphere-3at) about aliens...
[Question] [ ## Background Info One of my stories features the classic isekai trope of a person being reincarnated into a baby's body while still retaining their full cognitive abilities. The world they are reincarnated into has magic and a level of technological development somewhat akin to that of the 1600s. Otherw...
[Question] [ Imagine a continent the size of Africa. At the coasts are sophisticated cities, where people use digital technology, electric cars, and whatnot. Travel inland, across a mountain range or through a dense forest. Here there are petty kingdoms with castles, making war on each other with swords. There is no ...
[Question] [ In the future humans have used generational ships to explore the galaxy. It's taken centuries but we have finally found several habitable planets (they are not without their challenges of course). On one such planet we discover a great machine, essentially a giant cylinder in the ground. The 'walls' are ...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/174582/edit). Closed 3 years ago. [Improve this question...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/119228/edit). Closed 5 years ago. [Improve this question...
[Question] [ A world/continent/land/place/location where language has developed slightly differently from earth. Instead of communicating through normal speech, these beings communicate in a combination of vocabulary and pitch, almost like a song if you will. This means that one word can have several different meanin...
[Question] [ Blue stars are notorious for burning too bright and living too briefly for life to develop around them. But is there some way that life could survive long enough to reach the sentience stage? I'm thinking about a terrestrial world like Earth, not an ice moon. [Answer] # Binary Star Merger - It wasn't ...
[Question] [ There is a being who has been alive for as long as there has been life on earth. It has the ability to anomalously produce matter from its body out of nothing. Through the production of microfine strands of flesh dotted with tiny eyes, it has the ability to see and be cognizant of everything happening on...
[Question] [ I'm currently working on developing the navy for the most advanced faction in my fantasy world and I'm stuck with the design of the largest ship, a sort of a medieval carrier ship. I'm talking about having a ship that would be roughly the same size and function as a modern aircraft carrier, with the main...
[Question] [ Can humans survive by eating only nails and hairs of their own? As they grow they consume their own hair and nails. Hair includes even body hair. What is the maximum number days a human can survive on this? [Answer] **Your question asks how much longer they'd live, not if they could live forever** I t...
[Question] [ Imagine a world slightly more developed then ours. For example internal combustion engines are becoming obsolete, they have fuel cells and electric cars. They also started using genetic engineering to eliminate certain diseases and even improve humans. For example, parents could agree to test their genes...
[Question] [ I'm working on a TTRPG system that takes place about a century after an apocalypse event. I've hit a point where a bit of world building is required, and so I'm going down the list of technologies (electricity, medicine, radios, etc.) that could be viable without significant industrial activity. For cont...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w...
[Question] [ Humanity is finally reaching the interstellar space and had discovered a terrestrial planet covered in liquid nitrogen, the planet is orbiting a star thrice as massive as Sun but is too further away to produce liquid water for life. I am wondering is there anything we build that can sail on such an ocean...
[Question] [ Here's the idea: A geosynchronous orbit is an orbit that makes sure that the orbiting satellite is always above the same spot on the planet, so its orbital period is equal to a local day there. I've been wondering how to make the orbital radius of a geosynchronous orbit less than the radius of the planet...
[Question] [ The universe is dying because it has exhausted nearly all of its resources. Humans became the last species in the universe because of their resilience and sheer willpower. And yet, humanity still doesn’t want to die. Relying on the [Big Bounce Theory](https://www.google.com.ph/url?sa=t&rct=j&q=&esrc=s&s...
[Question] [ I'm allowing for approximately 150 years of technological advancement. This is in Earth's future, so I want to be realistic based off of what we are capable of now and projections for declining resources in the future. The space station is orbiting Earth, but at a distance, and doesn't rendezvous with th...
[Question] [ In the world I'm building, there is a single continent. However, in the deeper parts of the ocean, there are hydrothermal vents. They're pretty necessary to my story, but I can't figure out why they would be there as to my knowledge they usually need to be near cracks in the tectonic plates. I don't kno...
[Question] [ In my world, there's an individual (let's call him 'Imm') who takes it upon himself to guide all societies in the direction he thinks is best. To protect himself from repercussions (as well as everyone realizing he's immortal), he uses magic to alter reality in a limited fashion: after he speaks to someo...
[Question] [ Would it be possible to build a space elevator from the surface of the earth to the Moon with the following characteristics? * It would be attached to the Moon, using it as counterweight. * On the surface of the earth, it would anchor on different bases that were built following the orbit plane of the Mo...
[Question] [ This race lives underground in massive caverns/cave network. Hundreds of square miles large per cavern. Large/wide/tall enough that they have their own atmospheric conditions, essentially large enough that it doesn't really feel as if you're underground, save for the lack of a sky. Native-inspired cultur...
[Question] [ Following on from [my previous question about airship engines](https://worldbuilding.stackexchange.com/questions/234170), I was planning to limit the development of the internal combustion engine and much modern technology in my world by greatly restricting the availability of metals. Iron and all heavy ...
[Question] [ "Tower" may be a misleading word choice for what I have in mind. My approach to building vertical structures is a bit different, more on that later. **There are two main issues that plague vertical architecture. Those are *stability* and *weight*.** Tall towers are subjected to far more wind than houses ...
[Question] [ In my world a giant ship attempts to land on a planet, sadly it fails. Fortunately the top half is intact but the bottom is ripped up, holes all over it, basically destroyed except for some lucky spots. I want the bottom of the ship destroyed but the top intact, meaning people in the top won't die. some ...
[Question] [ Let`s say there is a planet on which fully automated machines capable of self replication, once belonging to several factions of highly advanced aliens, now extinct, are waging war against each other. The primary goal is to destroy all machines of the opposing factions before the planet`s resources run o...
[Question] [ The trope of a sapient species (most often elves) that is allergic to/poisoned by iron is a common one in fantasy works; however, there are quite a few ways to make serviceable cutting tools without iron or steel once you have enough metallurgical knowledge under your belt. However, before iron tools wer...
[Question] [ To avoid detail in the name of getting at the underlying question, I've got a modern-adjacent military being invaded by well-equipped nomads supported by angry aliens in space who have far too many nuclear missiles for anyone's good, but very little manpower. The protagonists' air force is intercepting m...
[Question] [ We have a great example in *The Strange Case of Dr. Jekyll and Mister Hyde*. A bad guy has run amok, and our detective begins to intuit the culprit, but the bad guy is almost always one step ahead because they share the same mind. Take this idea a little further into the science fiction space of telepath...
[Question] [ Let's say that there are 2 countries with very different inhabitants. Country A has no idea that country B exists. Country B may or may not know about Country A. Country A is surrounded by large mountains and has no sea access. Country B is quite far away, on the other side of the mountains. The mountain...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- This question does not appear to be about **worldbuilding**, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help). Closed 5 years ago. [Improve this que...
[Question] [ If there's two things i love, it's space-flight, and late 19th century technology, and i hope to implement as much of the latter into as much of the former in my current setting. And one thing that has me particularly interested are [Thorsten Nordenfelt's](https://en.wikipedia.org/wiki/Thorsten_Nordenfel...
[Question] [ This one feels a bit trivial, but I am genuinely stumped on how best to word a job specification that one of my characters is posting in a fantasy world. The basic idea is I have a dwarf who is in a medieval style fantasy city that is not very dwarf friendly. He wants to recruit people to come on an adve...
[Question] [ I'm working on a game idea and one of the mechanics I had in mind was making it so a premium material had to be formed by jettisoning it into orbit and letting it cool there while you guard it with your ship. As this metal cools and reaches the desired state, it would also become a beacon that would draw...
[Question] [ In my book I have a city which is constantly dark. The sun doesn't reach it. This is because it's a city of waste, so all the waste gets thrown into this city and lit on fire every single day, which makes smoke clouds that are so dark that it barely looks like day during the day. Is this realistic? [...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/83880/edit). Closed 6 years ago. [Improve this question]...
[Question] [ My fantasy novel features a floating city. I wanted to know how much energy (joules/second) it would take to keep a floating city aloft, but the definition of joules has "distance displaced" in its definition, and a floating city does not move, so no matter what I put for the force or the time, the energ...
[Question] [ A race of humanoids with only legs, prehensile feet and a mouth equipped with two rows of teeth made of magnetite, which they can magnetise using their natural electricity generation. How could such a race achieve establishing civilization to somewhere in our own point of progression and technological ad...
[Question] [ Trolls are about 30 meters tall on average and can weigh anything between 100 to 200 short tons at sea level. They can only be found to inhabit an island somewhere in the Pacific ocean and are in imminent danger as the volcano is going to erupt at any moment. We must act fast to save them using modern da...
[Question] [ I have a world I want to put together but I ran into a problem. ## Description This world is a cube infinite in all directions, exactly half of it is full of earth and half is space (where we see normal space stuff happening besides a place that makes the special "Suns" required for this world but I'll ...
[Question] [ I have no idea how to start researching this, so I'm going to here, where there are people who are much smarter than me. So I'm writing a story set in the medieval time period. In my story, there is a group who is consistently attacking towns in this one country. The monarch is able to get reports on the...
[Question] [ Orcs are typically depicted as being extremely warlike creatures. With their average intelligence slightly lower than humans. But they have more physical advantages such as superior strength and constitution. And since they have such a warlike culture, all of their resources and "orcpower" are directed t...
[Question] [ Based on [this question](https://worldbuilding.stackexchange.com/q/35441/6989) I asked before and it being too broad, here's a more specific question related to it. **What would happen to books as we know them, if wood was not available as a resource?** I presume humans would still want to write things d...
[Question] [ ## TL;DR then scroll down, genius This question is set in a planet with a human population, about the size of Earth with earth-like formations, that has appropriate lifeforms to the conditions following. The planet has multiple continents, but one continent is about the size of Asia and Africa combined (...
[Question] [ # Context In my world, magic has been granted to mortals by their gods. As a result, the Church heavily regulates it, and the only legal spellcasters are clerics and clergymen. Magic use is heavily regulated by a continent-wide neutral organisation of high clerics, bishops and cardinals (think of it of s...
[Question] [ German here. I have essentially no idea of the working of guns. I've been on a bit of a Zombie/Apocalypse trip lately. Watching the walking dead, playing fallout blablabla. I'll stick to the example of *[Fallout 4](https://en.wikipedia.org/wiki/Fallout_4)* for this question. Now I'm wondering about findi...
[Question] [ In my world, I'd like to place a region of permanent forest fire, but I'm having trouble coming up with the minute details of the biome. For example, my first idea was that it started when a lush, humid forest was exposed to a volcanic eruption, followed by a permanent but slow lava flow, lasting long en...
[Question] [ I just started thinking about a fictional universe where humans have colonized more or less any habitable planet (there is a huge concentration of habitable planets) and I'm trying to write down different planetary systems with different environments and stuff. I thought about a planetary system where mo...
[Question] [ In my world, an apocalypse happened, a nuclear war. Fast forward to the future. In places like Vegas, New Fresno, and Lost Angels (post-apoc LA) I was thinking about agriculture, and after doing a little bit of research, I decided what their staple crops would be. I planned on these settlements growing c...
[Question] [ Landfills seem like disgusting, nasty places that could be breeding grounds for all sorts of viruses and bacteria. What is the likelihood that the next lethal superbug or virus (like Ebola) could originate there? [Answer] Slim. Superbugs seem to come in roughly two flavours... things resistant to tre...
[Question] [ I'm am developing a creature, what I want to create is a giant octopus that is able to utilize poison. I would like it to shoot it from its beak if the poison is in liquid form, or emit the poison through pores on its skin in a gaseous state. I have no specific method in mind for the poison to kill, jus...
[Question] [ Is it possible to directly convert radioactivity to turn it into electricity? If yes, then what is the conversion rate? [Answer] Strictly speaking "radiation" — i.e. the result of radioactivity — is not just one thing. There are (most commonly) the following types or radiation that can be the resu...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- Closed 5 months ago. * This question does not appear to be about **worldbuilding**, within the scope defined in the [help center](https://worldbuilding.stackexchange.com/help). * You are ask...
[Question] [ In my book series, the Ishga Empire has a monopoly on technology that we would say ranges from an industrial revolution to sci-fi level, although their military tech capabilities for the sake of this question would probably be equal to Britain around the time of WW2. However, their technology is a very c...
[Question] [ So I was thinking about the dynamic you always see in space settings in which the heroes always have a mobile basecamp in the form of their ship, and was thinking about how to have this sort of thing for a cyberpunk-ish world. While it would not be exactly the same thing, I was thinking about giving the ...
[Question] [ I’m making my story as close to real and theoretical science as possible. I remember reading an article a while ago saying realistic space warfare would be capital ships engaging in missile warfare and trying to get into advantageous orbit. However, the more I think about it, you’d want to take out your ...
[Question] [ You are an 18-year-old Clark Kent, and you have made the decision that to spend four years in college would be too big of a waste of time; you are ready to start saving the world **now**. Developing your vocational skills would be to not focus on your strengths anyway. Fueling that decision is the fact t...
[Question] [ How could mercenaries become a lot more prevalent with well funded & competent militaries still in existence? Basing isn't a problem as there are many areas in this world that aren't (well) controlled by a government. But most of the world is still controlled by a functional government. Most militaries a...
[Question] [ I have a handful of immortals that have spent the last 6000 years stuck on planet Earth. They really, want to get out of here. They missed their chance back in Egypt before The Fall of the Pharaohs\*\*. This time around they aren't going to miss the next opportunity off this rock. They are planning ahead...
[Question] [ Cars seems to be everywhere in most cities and they create a lot of problems. For example: * dangerous pollution * traffic accidents * pedestrian/cyclist insecurity * less human contact * health/obesity problems * congestion and less space for people * fewer green areas Say you want to get rid of the car...
[Question] [ There is a planet called Vegavampira, and on this planet the only really intelligent animals are Vegan Vampires, but there is one problem, because they are Vegan, they will not kill, nor will they take blood or animal products without the animal's prior consent, however, as they are the only sentient bei...
[Question] [ Based off a [previous question of mine here,](https://worldbuilding.stackexchange.com/questions/10645/what-would-poverty-be-like-if-there-was-an-infinite-supply-of-food) concerning how a rapid growing weed-like grasstato, which is grass above ground, and potato underground, and how if there was infinite ...
[Question] [ A nation has found a large island containing dinosaurs! Primarily those of the late Cretaceous. A nation willing to pour pretty much any amount of money into the project needs a way to safely contain such creatures in some kind of zoo in which they are easily viewable. The problem? They're in the 1910s t...
[Question] [ I need to limit the development of the internal combustion engine so that it is only available in small numbers to few individuals and does not progress technically, or at least only progresses slowly. I want something that can power a large airship, but perhaps only just. The background is a world that ...
[Question] [ I am envisioning a scenario in which, probably for reasons of persecution or overpopulation, a people would begin to construct islands in the sea. Each island would be fairly close to the others and the society would want to be able to support agriculture on the islands. I had two questions about this id...
[Question] [ There is the strong theory that the Earth and the Moon were part of the same core at one point. This would lead one to believe that there are precious minerals under the surface of the Moon. Metals are normally heavier than dust and we don't want to send the moon out of orbit, so when we mine the moon we...
[Question] [ How do I keep a language from evolving for as long as possible? The world I'm talking about has two separate groups of humans who never meet, but even after being apart for some long time, like a millennium or so, their peoples can still talk to each other. Also, keep the answers as low tech as possible?...
[Question] [ In my setting, I have reasonably traditional Dwarves and Elves. The Dwarves magic allows them to control metals, earth, and other non living constructs. The Elves can control non sentient living things like plants and animals. They have more control over currently living things, then substances that were...
[Question] [ **Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers. --- You are asking questions about a story set in a world instead of about building a world. For more information, see [Why is my question "Too Story Based" and how do I get it opened?](https://w...
[Question] [ Working with a world with relatively high industrial technology, including good materials technology but no energy weapons or the like but modern-day ballistic technology. Why not use the equivalent of [pavise shields](https://en.wikipedia.org/wiki/Pavise) in combat, especially if the positions are fairl...
[Question] [ **This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information. Is t...
[Question] [ Setting: In my world the cellular aging process of humans is stopped and life is nearly endless. Humanity is spreading into space to colonize planets, so living place and resources are not big problems. Question: In such circumstances would there be enough recruits for military services? Why would one ri...
[Question] [ The Question about the blockade of en entire star system makes me wonder: **How would, if possible, a space "radar" work?** Or how would you scan for Ships further away than your Optical sensors can see. The big space makes is semi impossible to look for the reflected radar rays. 0-100 Eyeball also does...
[Question] [ I've been exploring the idea of an interstellar penal colony or prison planet from a realistic perspective. This idea is featured in many science fiction stories, but I've never really thought deeply about the concept itself. Let's assume ftl travel exists. Does it make sense for a society to send its cr...
[Question] [ Would humans on disparate planets with little to no contact with one another continue to evolve along different lines? In this universe, humans left Earth a hundred thousand years before. Or if it serves the story better 500,000 years before; and went in many different directions looking for planets they...
[Question] [ In a dramedy science-fantasy children's (for 8 to 15 years old) videogame I want to create, *Salade de Fruits* (which naturally means *Fruit Salad*) (my first language is French), there is a villainous antagonist who has a gun charged with pears. The technological level is a modern cannon, as a potato ca...
[Question] [ In the not-too-far-away future during a nuclear winter, one city survived by being sealed under a dome forcefield (?) protecting them from the cold weather and potentially harmful sunrays once the sky cleared up. Robots with varying degrees of complexity exist in this world, and I don't want them to be a...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/206437/edit). Closed 2 years ago. [Improve this question...
[Question] [ **This question asks for hard science.** All answers to this question should be backed up by equations, empirical evidence, scientific papers, other citations, etc. Answers that do not satisfy this requirement might be removed. See [the tag description](/tags/hard-science/info) for more information. I wo...
[Question] [ **Closed**. This question needs [details or clarity](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Add details and clarify the problem by [editing this post](/posts/162251/edit). Closed 4 years ago. [Improve this question](/posts/162251/edit) ...
[Question] [ This is yet another question concerning lasers as employed by sorcerers in a particular fantasy setting, but this one pertains to the momentum that photons possess and whether it's possible to generate light that imparts a higher proportion of its energy to an object in the form of momentum, rather than ...
[Question] [ Essentially could I make flexible cut proof clothing with flexible metal wire? Or would making the wire flexible require making them so thin that slicing is easy? Edit: naturally gambeson or some other form of padding will be worn beneath, but could armour be made made with a process similar to denim? Ju...
[Question] [ **Closed**. This question is [opinion-based](/help/closed-questions). It is not currently accepting answers. --- **Want to improve this question?** Update the question so it can be answered with facts and citations by [editing this post](/posts/68619/edit). Closed 6 years ago. [Improve this question]...
[Question] [ In the 12th century China invented primitive rocket launchers, repeating ballistas, guns and cannons and a lot of other crazy gun powder based weapons. So I wonder could the same level of technology be used to create cryogenic grenades? I think the easier and the most effective way would be using liquid ...
[Question] [ What about a thousand years? This question was asked before about planes (I think), but since a gun is considerably less complex than a vehicle, I was wondering if they'd stand the test of time. Or would you need to build new, more primitive guns? [Answer] A well-maintained firearm can last for genera...