johnrosa

Continuity mistake: When Bowman attempts to rescue Poole, he enters "C-pod" which, from HAL's vantage point, is the right-most pod. But when we see a close-up of the pod's door closing, we see it is located on the center pod platform, meaning this is B-pod, not C-pod - yet B-pod is the one Poole was using and it is tumbling away in space at this time. We can also see, just barely, that all three pods are present in this same shot. (01:32:45)

johnrosa

Continuity mistake: As Bowman enters B-pod to retrieve the AE-35 Unit, he lifts his left foot into the pod first. But as Poole is watching him do so on a monitor, Bowman lifts his right foot into the pod first. (01:12:45)

johnrosa

Continuity mistake: In several scenes, we are given HAL's visual perspective as if seeing through his lens. This is done with an overlayed image of the lens on whatever area is in sight of the lens. As Dave is entering HAL's memory circuit room (red lighting), one shot again suggests we are again seeing what HAL sees, but there is no HAL lens located and oriented to provide the angle we see. A lens would need to be mounted on the narrow wall directly opposite the circular doorway, yet HAL's lens in this room is mounted on the 'ceiling'. (01:51:25)

johnrosa

Continuity mistake: When Dave begins to disconnect HAL's circuits, one angle shows him unlock the first, second, then third unit. Just as he's about to remove the key from the third lock, the angle changes and he's pulling the key from the second lock and then goes for the third again. We know this is consecutive time as HAL is pleading with Dave the entire time. (01:51:45)

johnrosa