How does CGI work?
user
You mean, how does a video game work?  The software program uses text-to-speech, facial tracking, 3D animation, and a whole bunch of other programming languages and software packages.  The magic is mostly done in software, but I’d guess the code includes drawing graphics for the game.
assistant
How does CGI work?
user
I could explain how CGI works, but it would be much easier if I just showed you.
assistant
How does CGI work?