Despite the opulent or debauched images one might have about the investment industry (depending on one’s perspective), the fact is that investing is a highly intellectual pursuit. I don’t mean this in the colloquial sense where one ruminates on meaningless abstract ideas purely for contemplation’s sake. Rather, it is an immensely cognitive and productive activity. Successful investing doesn’t require exceptional physical conditioning, brawn, salesmanship, “people skills”, mathematical aptitude, or a high IQ. It entails (I think) developing some kind of mental model for how the world works. Not only must this model display some degree of accuracy (i.e. be a good one), but one must maintain conviction in his/her model and have the integrity to stick to it through thick and thin. Said differently, one needs a well-defined investment philosophy.
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