The first thing I was asked was "What is post production?"
Production is when the actors, director, cameraman, etc get together to create raw footage. Post production is all the stuff after that.
Like creating holograms where none existed.
Or the part I really like to see, how these very creative people come up with a whole new world of places and things, like the inside of a space ship. Do you go sleek and modern like the starship Enterprise? Or rough and tough like the Klingon ships?
It seems to me the ship reflects the personality of the characters that built it.