The whole use of generations on wikipedia seems like some sort of OR to me. Before this site came along, people used to talk about generations, sure, but it wasn't stuff like first generation, 5th generation, etc, it was 8-bit generation, 16-bit generation, 32/64 bit generation and such. Not that that was a good way of doing it, mind you, what with overlap and the fact that processors didn't always increase in bits between gens, but it's how it was. If someone can cite the numbered generations as used on this site before this site used it, I'd be very surprised.     