Over the weekend, I stumbled across an interesting website, www.johntitor.com. It contains an archive of posts to Internet message boards by one John Titor, a purported time traveller from the year 2036. Whether you believe he is actually from the future or not, it is certainly an interesting read.

Speaking of time travel, I may be writing a short story on the topic within the near future. I'm not certain which time travel "model" I want to use. John Titor answers some common time-travel paradoxes through the multiverse theory, and backs it up with plenty of pseudo-scientific physics.

Other works of fiction, such as the movie "Paycheck," "Harry Potter and the Prisoner of Azkaban," Michael Chrichton's "Timeline," or H.G. Wells' "The Time Machine" theorize time travel using a single-universe setting, in which changes you make to the past affect our current future. I think that this model is more satisfying for a work of fiction; however, it is more vulnerable to paradoxes.