What this teaches

Graham explains power-law returns from the investor side: the best ideas look like bad ideas, YC's returns come from a handful of companies, and even professionals can't reliably pick winners at the time of investment.

Why it matters

Once founders understand the power law, every confusing investor behavior (herding, moonshot bias, pass patterns) makes sense.

Key lessons

Read the original Black Swan Farming Paul Graham · paulgraham.com