My wife and I took my mom to The Time Traveler’s Wife, a convoluted SF romance starring Eric Bana and Rachel McAdams. Bana plays Henry, a man with an extremely rare genetic disorder which causes him to time travel both forward and backward. He has no control over when and where he goes. McAdams plays Clare, the title character who becomes his wife. Their relationship is… complicated. He meets her for the first time when he’s 20-something, and she’s in college. She meets him for the first time when he’s 40-something and she’s five years old. Like any relationship, they have good times and bad times, but unlike other relationships, the good times for one person often coincide with bad times for the other person.
1. Time is a slate–anything can be can be changed! Be very careful, you might prevent your own birth. (ala Back to the Future). Paradoxes are a major problem–if you change antyhing you could prevent yourself from going back which would keep you from going back to prevent yourself from going back–and so on.