david-mcraney

The Biological Reason You Have Too Many Facebook Friends

Brian Moylan · 11/02/11 02:20PM

So many people think that the more Facebook friends they have, the better. Wrong! In an excerpt from his just released book You Are Not So Smart David McRaney explains "Dunbar's Number" and why trying to keep in touch with more than 150 people, even on Facebook, is a biological impossibility.