The Blind Spots of Graham's Book

Ariel Schwartz: Buffett had some blind spots, partly of sort of an ethical, professorial nature. He was looking for things to teach that would work for every man; any intelligent layman could learn and do well. But he didn't really want to do anything that the reader of his book couldn't do if he was on a desert island with just one line to a broker. So there is not the loyalty factor, but it's just not going to be the same in food. A great many of the decisions on fast food as to where you eat is simply based on which one you see.