I tell you what DOES bother me about "2001"... the fact that the Discovery astronauts have a habit of putting on their spacesuits in times of potential danger (for instance repair EVAs) but they leave their helmets, gloves and oxygen backpacks in storage down in the pod bay!
I realize that this is a major plot point in the film, but it's just stupid. :lol
Also, consider this: HAL's mind works extremely fast. HAL reads Bowman's and Poole's lips in the pod when they discuss how to disconnect him. At some point, Bowman and Poole have to get out of the pod.
How come HAL doesn't strike at THAT moment and just blow them both out into space by opening the pod bay doors? :lol
K