A problem is an opportunity. Mr. Market suffers from some rather incurable emotional problems; you see, he is very temperamental. When Mr. Market is overcome b

A problem is an opportunity. Mr. Market suffers from some rather incurable emotional problems; you see, he is very temperamental. When Mr. Market is overcome by boundless optimism or bottomless pessimism, he will quote you a price that seems to you a little short of silly. Warning: you can only tell if the price of a particular stock is silly if you have some idea of what its price should be (with a margin of safety).