科学美国人60秒:Sometimes the Hoofprints Are from Zebras

play stop

mute max volume

00:00

00:00

repeat

Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin.

David J. Hand, emeritus professor of mathematics at Imperial College London, talks about his new book The Improbability Principle: Why Coincidences, Miracles and Rare Events Happen Every Day.