To beat the market you'll have to invest serious bucks to dig up information no one else has yet.
My expertise was in public finance, particularly corporate taxation, since I had worked at the US Treasury.
You only need to make one big score in finance to be a hero forever.
I had some of the students in my finance class actually do some empirical work on capital structures, to see if we could find any obvious patterns in the data, but we couldn't see any.
What counts is what you do with your money, not where it came from.
Arbitrage proof has since been widely used throughout finance and economics.