Daily Kos user mindgeek, also known as the Princeton neurologist Sam Wang, co-authored an article on left-handedness and the presidency, which I highly recommend.

Only about 10 percent of people are left-handed, but half of the U.S. presidents have been southpaws, as are both John McCain and Barack Obama. Click the link to read some hypotheses about why this group might be overrepresented among the most successful politicians.

Share your speculation in the comments, and please note your handed-ness. (I am right-handed.)

A couple of weeks ago the same authors wrote this fascinating piece on “The neuroscience of false beliefs.” It’s a must-read.