Everyone here is bitching about privacy breach, algorithm complexity etc. Actually it has nothing to do with this experiment. From TFA
"Anyone with a Facebook account can participate to verify if everyone is on average approximately six steps away from any other person on Earth. You’ll be asked to select one of your Facebook friends whom you believe is most likely to know the “target person” that has been assigned to you. A message will then be sent from friend to friend until you get it to the “target person.” The goal is to do this in as few steps as possible. "
Basically they are just repeating the old mail experiment, but with a new way of passing messages
- unless you (or one of your friends) participates nothing happens to your privacy
- no computer algorithm is involved
- no problem with celebrity profiles linking thousands of people that now nothing about each other
It seems that more and more mathematicians are using a new, high level language named "research student".