i say, old bean, have you seen my hat?

Today I got hatted. Unfortunately, it was a dud: no one on the other side.

psychology jargon

What's the technical name for the belief that life is fair? ~"just world assumption"?

identification problem

Can anyone explain the identification problem (very short article) in a non-confusing way?

Is this stuff used in the context of estimating supply separate from demand from time-series data? How can one separate these two if we can only measure one figure, namely sales?

I doubt there are any big conceptual hurdles here, but the presentation is confusing. Why do they use Q for both supply and demand?

libertarian video cartoon

nice libertarian video cartoon, via MR.