Dark Star (1974)

Revealing mistake: When Pinback is hanging from the lift, just before he decides to undo the bolts, you can see a piece of wood supporting his back. (00:43:00)

jle

Pinback: Er, Talby, he's drifting away from the ship without his jetpack.
Boiler: Can you dig that? I always knew that guy was weird.

Question: Not many people have even seen this classic, but i'll give it a go. On the DVD, when the crew are in the food store/bedroom, you can see that there are several pin-ups of girls on the wall behind them which have been blurred out. I can't see why the censors would be so fastitious about something which is hard to notice, let alone offend anyone - does anyone have any idea why they might do such a thing?