First: check how many friends you have on Facebook. Next: ask yourself how many of them you consider to be ‘real’ friends? According to Dunbar’s number, we can only maintain about 150 meaningful relationships at one time. And you can probably count your closest friends on one hand. Your social brain Robin Dunbar has spent nearly 50 years studying primates. Back in the 90s, he looked at the relationship between group size and brain size […]
I’m sure you know the idea: everyone on Earth is connected to every other person by six or fewer links. The idea was first proposed in 1929, but is six still the correct number of links in today’s connected world?