Where are the Customer's Yachts?

Fred Schwed's book Where are the Customer's Yachts is a fun, easy read. Written in 1940, it contains many eternal truths. Such as:

[after a vague forecast] If the thoughtful reader will now read that statement backwards he will discover that its original lucidity is not impaired.
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There have always been a considerable number of pathetic people who busy themselves examining the last thousand numbers which have appeared on a roulette wheel, in search of some repeating pattern. Sadly enough, they have usually found it.
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Do you perceive quite clearly what is the objection to playing a roulette wheel that has two zeros on it?