Your brain is a time machine with three modes that control everything from instantaneous tasks like moving to maintaining long trains of thought and ultimately staying in synch with night and day. That's what scientists are saying...

"I would argue that time is more fundamental than space, because one can just close one's eyes and relive memories, going back in time," Buhusi says, "or prospectively go forward in time to predict something, without actually changing your position in space."



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