You’ve all heard the joke about the Chicago economist who doesn’t pick up the $20 note on the pavement, as someone would have picked it up already. All very good – it is discussed over at “Economist’s do it with models”.
The always brilliant SMBC has come up with a different take on this in his comic:
In both cases I think our problem stems from poorly defining the choice set – but that is sort of the point, it is an indication of how we can inadvertently misuse the EMH if we haven’t fully considered the types of expectations, the amount of competition involved, the existence of change from a steady state, and the general ideas of history dependent or emergent phenomenon.
Look, I didn’t say anything I said would be funny – but the comic is humorous ok!