I just stumbled on this interesting discussion between Eugene Fama and Richard Thaler – they talked about whether markets are efficient or not.
Thaler argues that markets are not efficient. Fama agrees, but nonetheless are argue that we have no better model of the world. It shouldn’t be a surprise to my readers that I agree more with Fama than Thaler.
What I particularly notice is just how little evidence Thaler is able to present that markets are not efficient. Yes, he comes up with anecdotes, but that is not evidence. With billions of investors and billions of different markets and prices you will always be able to come up with some example of pricing behavior, which in someway looks inefficient or irrational, but that does not mean that you generally can say markets are inefficient rather than efficient.
My own view is very much based on my experience from…
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Utopia, you are standing in it! 
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