[benj111]

If I predict your car is going to crash based on the fact that the tyres are bald, the brakes are worn, and the steering wheel isnt attached. You probably (if you take the prediction seriously) want have a crash, because you'll get the car fixed.

So it isn't a particular problem of economics. The problem of economics is testing theories. I would guess that most economists have a theory that never gets tested, because you can't test them in a lab, only in real life, the depth of knowledge just isnt there to know what will work, what won't, and popular but wrong theories aren't proven wrong fast enough. I cant reasonably say whether bald tyres will cause a crash, because no ones seen bald tyres before.