"English is a prerequisite. If you haven't mastered it yet, learn it. You must be able to read, write, speak and understand English." On his list of things to l

"English is a prerequisite. If you haven't mastered it yet, learn it. You must be able to read, write, speak and understand English." On his list of things to learn for physics, that even comes before mathematics. You could also say that learning to use a computer is key to become a programmer. That's obvious and not very telling about what is specifically required to be a programmer.