Throughout Interstellar, there are many references to "They" - the advanced species that created a multidimensional spacetime artifact that allowed Cooper to talk with Murphy. The movie makes it pretty clear that "They" are an advanced humanity.
They create the wormhole that enables the whole plot of Interstellar.
My question:
- How did these humans survive in order to do this, in the first place?
Humankind only survives because of the effects of the wormhole, both allowing travel to other worlds and a new colony and Cooper communicating backwards in time. I don't understand how either of these would have happened however given that both are precipitated on humankind already surviving and causing them.