A man can have great mathematical ability and an unusual power of accurate observation and yet fail in speculation unless he also possesses the experience and the memory. And then, like the physician who keeps up with the advances of science, the wise trader never ceases to study general conditions, to keep track of developments everywhere that are likely to affect or influence the course of the various markets. After years at the game it becomes a habit to keep posted. He acts almost automatically. He acquires the invaluable professional attitude and that enables him to beat the game—at
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