Number of degrees by which everyone in the world was thought to be separated, according to a famous 1967 study; hence the phrase, "six degrees of separation"
Number of degrees by which everyone in the world is actually separated, according to a new study of 721 million active Facebook users
THE WEEK'S AUDIOPHILE PODCASTS: LISTEN SMARTER
- How academia's liberal bias is killing social science
- Diagnosing the Home Alone burglars' injuries: A professional weighs in
- 43 TV shows to watch in 2014
- How I lost all my money
- How Wall Street is chipping away at reform
- How to be the most productive person in your office — and still get home by 5:30 p.m.
- Why Pakistan won't hunt down the terrorists within its borders
- 10 things you need to know today: December 21, 2014
- How computers will replace your doctor
- Are there dogs in heaven? Let's hope not.
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