Yeah, I don't understand that either. As a developer, learning is my job. Writing code that I already possess all the prerequisite knowledge to write requires a

Yeah, I don't understand that either. As a developer, learning is my job. Writing code that I already possess all the prerequisite knowledge to write requires almost no time at all, so 99% of my time is necessarily going to be spent learning how to do things I don't already know how to do. If I had to wait until I got home to learn those new skills, I'd never get any non-trivial amount of work done.