[gmiller123456]

It depends. Usually the code evolves in a live coding session and a lot of code is deleted or changed to show intermediate steps to make a point. Just seeing the finished product isn't the same thing.

I think a great deal of the actual "typing time" isn't necessary, but showing the intermediate steps usually is. I think the authors show it just as a means of avoiding the very time consuming process of editing a video. So there's some give and take. They save a considerable amount of their time that would have been an incredibly boring and time consuming process, and you loose a little bit of your time but get to watch a video that wouldn't have been made otherwise.