[yann2]

This is a social science experiment with 3 billion guinea pigs.

Every time you rerun it, if someone somewhere (and the people connected to them get effected) how many attempts do you get?

[nradov]

Facebook does most of their experiments by rolling out changes to a smaller subset of users. The number of guinea pigs is much smaller.

[yann2]

Animal testing is regulated activity. Do you know why?