Monthly Archives: April 2011

Calculating Days of the Week (In Your Head)

On what date does Easter fall this year?  What day of the week is your dad’s birthday?  What day of the week is July 4th this year?  Answering questions like this, quickly, without consulting a calendar, seems to be a frequent parlor … Continue reading

Posted in Uncategorized | Leave a comment

Don’t Have Faith In Science

From last week’s episode of The Big Bang Theory: Sheldon: “Dr. Greene.  Question?” Brian Greene: “Yes?” Sheldon: “You’ve dedicated your life’s work to educating the general populace about complex scientific ideas.” Brian Greene: “Yes, in part.” Sheldon: “Have you ever considered … Continue reading

Posted in Uncategorized | Leave a comment

Analysis and a variant of “The Premo” card trick

As part of last week’s discussion of card shuffling, I mentioned “The Premo,” a card trick worked out by Charles Jordan almost 100 years ago, and analyzed by Bayer and Diaconis in 1992 (see the references at the end of … Continue reading

Posted in Uncategorized | 4 Comments