Time travel and Dr. Who

With the time travel in the Once season finale, I noticed there have been some crossover discussions of Doctor Who in the forums, so I thought some might like this article  which in turn points to a PDF of a nice discussion of the basis for all this “timey-wimey” stuff. There is a link to the original paper, entitled “The Blue Box White Paper”, in the first paragraph of the article and it’s a lot more informative than the article itself. Enjoy.

(I hope the link is visible and not repeated. When I use the text editor, the link is there but it’s invisible in the visual ditor. So I switched to the visual editor and addd  it again. Now it shows up once in the visual editor but twice in the plain text editor. Hopefully one of them works for you!)