These Are the Mathematical Concepts Investors Should Know
Interview with Victor Haghani, former quant at LTCM. Short version: know the math, trust the math, but be careful with the leverage.
Referenced paper is also very interesting. How do people bet on a biased coin after being told the coin is biased? Irrationally.
Rational Decision-Making under Uncertainty: Observed Betting Patterns on a Biased Coin