Uncommon Descent Contest Question 14: Is backwards or forwards time travel really possible?
|December 1, 2009||Posted by O'Leary under Cosmology, Uncommon Descent Contest|
Note: This contest has been judged. Go here for the results.
Another one for physics buffs. Contest 13, below, asked: “The Large Hadron Collider is back up and running, but why?” The question there was whether what we would learn is worth nine billion dollars. Two physicists have suggested that Hadron’s woes are due to particles travelling back in time. Their theory has been received with the amusement one might expect, but it raises an interesting question, one that is a staple of sci-fi literature – is forward or backward time travel possible, even for particles?
Actually, I came away with two questions from what I had read, so it made sense to sponsor two contests on this story, and this is the second.
For a free copy of the Privileged Planet DVD, about the unique position of Earth, provide the clearest answer to this second question: Is backwards or forwards time travel really possible, even for particles? Why or why not? What are the consequences if it is true?
I recommend going to Contest 13 if you need background on the Large Hadron Collider in relation to this question, though there are plenty of other leads.
Here are the contest rules, not many. Winners receive a certificate verifying their win as well as the prize. Winners must provide me with a valid postal address, though it need not be theirs. A winner’s name is never added to a mailing list. Have fun!