> and almost none of it can be written off an unimportant. I just wanted to say that this is immensely under-appreciated, even by most people in the field. The

> and almost none of it can be written off an unimportant. I just wanted to say that this is immensely under-appreciated, even by most people in the field. The more you learn, the more you realize that everything matters and every little bit of knowledge connects to a bunch of other knowledge. Most people in undergraduate classes ask "what part of the textbook is important" or "what part of this is on the exam", or even "what part of this will I need to know for my job", but they have the wrong attitude altogether.