On 1 October 2006, an anonymous user viewed Wikipedia from the IP address 81.159.242.155.

At 1:15 the user added the heading “Early career” to the article on satirist David Frost.  The heading has since been changed to “Early life.”  Another contribution to the article on British journalist Carol Thatcher was also later removed or reformatted.

This person has made one enduring contribution, however.  At precisely 5:34 pm on that day, the anonymous user added these immortal words to the article on the 1940s:

The 1940s decade ran from 1940 to 1949.

It really sums it up nicely, doesn’t it?