Star Goats, Tofu-Spam and Time Travel
BBC NEWS | Science/Nature | New model 'permits time travel'
If you went back in time and met your teenage parents, you could not split them up and prevent your birth - even if you wanted to, a new quantum model has stated.
Researchers speculate that time travel can occur within a kind of feedback loop where backwards movement is possible, but only in a way that is "complementary" to the present.
According to the probability arguments in this article, changing my personal future by going into the past should have no limitations because the future hasn't happened. In other words, if a great
Star Goat were to threaten Earth, I could nip back in time and feed it
tofu-spam until it fell asleep and missed Earth entirely. This would not violate the model because I have not yet observed the goat's behavior in my near future. I could not make the goat dissappear or change trajectory, because I would have already observed these thing in my present.
Posted by bill at June 18, 2005 12:24 AM