Steve Job's NEXT step OS, an amzing piece of engineering, has many elements incorporated in Mac OS X. I am gushing over the new Jagaur. If this OS does not make you want a MAC, no OS will.
Light years ahead of anything else.
As for BeOS [or was it OS/2?], was that not a IBM/MS project that MS killed to get the kernel, which it uses in NT, 2000 and XP?
Sci Fi, you speak brilliantly. Poor Jaguar, nobody coded for it. I think it was a bit to advanced for its time. And, it was ugly as sin. The tacky slash and bulky joypad, etc.