I don't know if this is the right section of the forums for this, but, my friend Nick and I (Nick runs all the major operating systems on Dell laptops and desktops, a Mac Pro, and some linux boxes) got into an argument one day about whether Apple's use of the BSD Unix system for the foundation of the Darwin kernel was [illegal, wrong, makes it less of an operating system, demeans OS X, whatever] bad. I don't understand the topic all that much, but BSD Unix is an open-source thing, am I correct? One that was meant to be built upon, and I could be wrong, but I don't think the Darwin kernel is an exact copy of the original BSD Unix? Please feel free to correct me in any of my facts/statements, but I'm curious as to where everyone stands on this. Thoughts, et cetera.