UNIX: A class in itself?

I want to know UNIX. I like the stable machines.

But, wow, it seems nothing from my experience with other operating systems transfers. I want to say it's like trying to learn to drive in England if you grew up driving in the USA, but I think it's even more different than that. Using computers regularly feels like it changes the way our brains are wired. Apparently, Windows wires our brain in such a way that it becomes impossible to adapt to other operating systems. Is it a Microsoft conspiracy? Who knows.

Whatever the case, UNIX could truly be taught over the course of an entire semester.