You could certainly be a software developer, and a reasonably competent one, without having heard of RPN. I would argue that it's harder to be a computer scien

You could certainly be a software developer, and a reasonably competent one, without having heard of RPN. I would argue that it's harder to be a computer scientist---and shocking to manage to get to the PhD level in computer science---without having at least a little exposure to RPN: it's a classic example of stack manipulation and has important theoretical relevance to programming language theory and compiler design.