I'm considering a chapter on Buffet (and Peter Lynch). More research is needed but I am not convinced that Buffet really is the super investor he seems to be at first glance. Some economists have made plausible arguments that his outsized returns are due to factors other than his stock-picking acumen.

However if I'm wrong and Buffet really is the superinvestor most people think he is, I'd be even more worried about Berkshire Hathaway. Buffett is in his 80s. What evidence do we have that his successors are equally skilled?