That’s so cool: just occurred to me it’s like the inverse of crowdsourcing. No one guesses the right weight of the cow, but the average of all guesses is almost exactly the right weight.
Well, here you never know the weight of the cow, per se. If the weight-of-cow question were asked, it would "If you were asked to guess the weight of some cow, do you believe you would overestimate it?" And then you find out, that, 63% other people share your self-evaluation, or else do not. There is no info about any actual cow.