added answers to Questions in md file

BuildingAChainlitApp.md

@@ -133,6 +133,9 @@ Simply put, this downloads the file as a temp file, we load it in with `TextFile
 
 Why do we want to support streaming? What about streaming is important, or useful?
 
+<!-- A: This allows for portions of the respnse to be available and streamed as they are generated. Therefore the user does not have to wait for the entire response
+to be ready. -->
+
 ## On Chat Start:
 
 The next scope is where "the magic happens". On Chat Start is when a user begins a chat session. This will happen whenever a user opens a new chat window, or refreshes an existing chat window.
@@ -175,6 +178,8 @@ Now, we'll save that into our user session!
 
 Why are we using User Session here? What about Python makes us need to use this? Why not just store everything in a global variable?
 
+<!-- A: There are many beenfits to using User Session, but overall they allow for building scalable, user-centric applications where context, personalization, and state persistence are critical.  -->
+
 ## On Message
 
 First, we load our chain from the user session: