payne
Striker
wtfI have answered it.
I don't even know what you're offering as to what you think I have said that is a contradiction.
I'll jog your memory.
An evacuation chamber requires a pump to push the external atmosphere away from the chamber in order to allow expansion of the atmosphere already inside that container and thus allow the release of some pressure from that chamber.
Nothing is sucked out because suction does not exist, nor pull. Just push.
So tell me what I've said that contradicts?