Rules for Time Travelers [Spoiler? alert.]
posted by BitterOldPunk on May 14, 2009 - 82 comments

Hang this in your time machine.
posted by fearfulsymmetry on Apr 11, 2009 - 65 comments

Back to the FutureDrawing Board
posted by Pretty_Generic on Jun 17, 2005 - 42 comments

A Guide to Science Fiction Chronophysics , a serious look at some of the hard questions ignored in soft-science fiction and fantasy. While we wish some time lines had never come to pass, or would go back in time and shake hands with themselves, there are circumstances that can lend themselves to great deal of fun.
posted by Jerub on Feb 27, 2005 - 14 comments

Just how plausable is time travel? Could you go back in time and kill your own grandfather?. Would you want to? Time travel is a popular subject for films, but do the writers work out exactly what is happening? Current opinion seems to be that time travel is only possible to the future, and is only one way, by travelling at near light speed. However despite this, time machines seem to already be on sale.
posted by Orange Goblin on Feb 10, 2003 - 53 comments