just a question

Rating: 9/10 (21 March 2015)

Not a review. Just a question. So, how did this "present humans" who became "future humans" who are referred in this movie as "they" manage to get out of our galaxy to get to where they are when the wormhole wasn't there yet? It is understood that these "they" are responsible for creating that wormhole somewhere near Saturn so present humans can get through it.Does it suggest that NASA was able to create a craft that is so powerful it was able to send "they" to a very faraway world? Another thing not clear to me is when Endurance first went through the wormhole, Dr Brand saw something outside the window of the craft. When asked later what it was, she says, "greatest handshake ever." And it turns out what she saw was actually Cooper trying to reach out. This is the Cooper that has already entered the black hole. It's just not clear in this scene how this scenario was triggered when this is still the present. The Cooper who was reaching out to Dr Brand was the future, But it hasn't happened yet.