Abductions from the past
I had made a post before about the reason of the 2009 depression (the one from the movie not from the real world).
The movie never gives a real explanation about the so called 10 year depression. Probably nowbody knows how did it happened.
If there is the technology of abducting people from the past (3 seconds before their death) they could had made the same thing abducting Bill Gates at the age of 4.