Three Bugs: the bugs in the worlds of finance, compound interest, and probability quantification. The bugs in finance, compound interest, and probability quantification have existed since ancient times. During the Spring and Autumn and Warring States periods, there were loans, interest, and speculation. Lending was a traditional financial form. Among common folk, landlords' nine out of thirteen returns, small bets leading to big bets, were also early financial practices. With the development of modern productivity and abundant resources, traditional finance evolved into stocks, equity, futures, and so on. Compound interest exists in all things. Besides wealth, health also benefits from compound interest—regular exercise naturally improves physique; reading insightful books broadens one's knowledge perspective. No two leaves are exactly the same; change is a constant. The probability of different changes must be calculated. In ancient times, probability quantification was about betting on big or small, which prince would ascend the throne—Ying Zheng was a prince, Lü Xiang bet on his ability to ascend the throne. Returning to modern high technology, finance exists around ordinary people. Savings periods, fixed deposits, and wealth management all accrue interest. Stocks pay dividends, and stock fluctuations are normal. With amplitude, one can calculate the probability of upward movement, the magnitude of upward movement, the probability of downward movement, and the magnitude of downward movement. Applying this might even turn into extra wealth. $GNS $GHST $PUNDIX