From Slashdot article
Time Travelers' Convention:
Some folks at MIT are holding a time-travelers' convention. The idea is to make it so famous and so widely-known that even thousands of years in the future, people will still know exactly when and where this time-traveler convention went down, and will all come travel to it at some point in their illustrious time-traveling careers. For those interested in attending, it's on May 7, 2005, 10:00pm EDT (08 May 2005 02:00:00 UTC) in the East Campus Courtyard at MIT. 42:21:36.025N, 71:05:16.332W (42.360007,-071.087870 in decimal degrees).
So the real interesting questions here are:
1. If time is continuous then the future exists now (somewhere) and therefore if humans ever did (will) harness the power of time-travel then wouldn't they come back and let us know?
2. Are they such arogant snobs that they have better things to do than come visit their grandpappies (like rush to the future to pick up their very own sports almanac) ?
3. If Dr. Who doesn't show up in his Tardis, does that prove that time-travel is impossible or only that humans are too dumb to figure it out?