The training of a stock trader is like a medical education

“The physician has to spend long years learning anatomy, physiology, material medical and collateral subjects by the dozen.
“He learns the theory and then proceeds to devote his life to the practice. He observes and classifies all sorts of pathological phenomena. He learns to diagnose. If his diagnosis is correct – and that depends upon the accuracy of his observation – he ought to do pretty well in his prognosis, always keeping in mind, of course, that human fallibility and the utterly unforeseen will keep him from scoring 100 percent of bull’s-eyes.
And then, as he gains in experience, he learns not only to do the right thing but to do it instantly, so that many people will think he does it instinctively. It really isn’t automatism. It is that he has diagnosed the case according to his observations of such cases during a period of many years; and, naturally, after he has diagnosed it, he can only treat it in the way that experience has taught him is the proper treatment.”
“You can transmit knowledge-that is, your particular collection of card-indexed facts-but not your experience. A man may know what to do and lose money – if he doesn’t do it

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