User 100115
Banned
Except some of the races who manufactured the trap had access to time travel - so if they know where and how the Doctor died - due to it being a fixed point - they know that they don't need to trap him, since he died before he could cause the catastrophe.
My head *really* hurts. I think we have to go with the 'current events can change the past if it's necessary' philosophy.
The events surround the end of the universe and the pandoria happened BEFORE silenceo. So yeah, they needed to trap him because they thought he would end the universe.