This document discusses market equilibrium and how markets work. It contains the following key points: 1) Markets integrate the combined knowledge of all participants, with trading aggregating vast amounts of dispersed information into security prices. 2) People trust market pricing every day to provide an accurate estimate of current value for goods like fish or stocks. A stock's price reflects all known information about a company. 3) Few mutual funds survive and beat their benchmarks over 10-year periods, highlighting the difficulty of consistently outperforming the market. 4) It is better to let the market work for you by harnessing its collective knowledge, rather than trying to outwit it and compete with all other investors.