http://www.johndcook.com/blog/2013/02/04/four-hours-of-concentration/
And since this is the Internet, and facts are involved, our gwern turns up there also.
Chuck Norris tried purchasing gwern once, but gwern sent him an exhaustive cost-benefit analysis that caused him to change his mind.
http://www.johndcook.com/blog/2013/02/04/four-hours-of-concentration/
And since this is the Internet, and facts are involved, our gwern turns up there also.