To truly grasp Warren Buffett's achievement, consider this: Berkshire Hathaway's performance since 1965 has outpaced the S&P 500's returns even if you had invested in the index on its single best day in history—the absolute bottom of the Great Depression in June 1932. This demonstrates an unparalleled level of long-term value creation.

To illustrate Buffett's success: an investor who bought the S&P 500 at its absolute bottom in 1932 would have been outperformed by someone who simply held cash for 32.5 years and then bought Berkshire Hathaway in 1965. His compounding ability dwarfed even perfect market timing.

The S&P 500's historical earnings growth is ~6.7%. The ~9% growth of the last decade was an exception, driven by the unprecedented hyper-growth of a few mega-cap tech firms. As the law of large numbers catches up to these giants, investors should anticipate future index returns to revert to historical, lower norms.

A key tension in modern investing is that the best businesses often appear perpetually expensive (e.g., 30x+ P/E). However, their ability to continue delivering double-digit returns challenges the core value investing principle of buying at a low multiple, demonstrating the immense power of long-term quality and compounding.

The S&P 500's self-cleansing mechanism, where failing companies are replaced by rising stars, makes it inherently safer over a century. However, Berkshire Hathaway's defensive posture, strong culture, and lower current valuation may offer superior downside protection over a shorter, 10-year horizon.

Financial models struggle to project sustained high growth rates (>30% YoY). Analysts naturally revert to the mean, causing them to undervalue companies that defy this and maintain high growth for years, creating an opportunity for investors who spot this persistence.

The idea of an infinite holding period is a myth, even for great companies. After Buffett bought Coca-Cola, it eventually traded at 58x earnings in 1998. By not selling, Berkshire endured a meager 4.5% annual return for the next 27 years, proving that even great businesses become sells at exorbitant prices.

Even for the world's greatest investor, success is a game of outliers. Buffett made the vast majority of his returns on just 10 of 500 stocks. If you remove the top five deals from Berkshire's history, its returns fall to merely average, highlighting the power law effect in investing.

Media headlines of 10% stock market returns are misleading. After accounting for inflation, fees, and taxes, the actual purchasing power an investor gains is far lower. Using real returns provides a sober and more accurate basis for financial planning.