Two more 2001 mistakes
No radiator fins on Discovery to dissipate all the heat from their
nuclear powered ship drive.
Craggy lunar mountains.
Both were done for aesthetics, even though the film makers knew better, even in the late 1960s.
I suppose it is not quite fair to say that we didn't have any lunar
bases, manned ships to Jupiter, or true AI computers by 2001, either.