Drawing from Sun Tzu and Charlie Munger, the key to long-term investment success is not brilliance in stock picking, but systematically avoiding common causes of failure. By identifying and steering clear of ruinous risks like excessive debt, leverage, and options, an investor is already in a superior position.

Compounding has positive asymmetry. A stock can only lose 100%, but it can gain multiples of that. This means a portfolio with one stock compounding at +26% and another at -26% doesn't break even over time; the winner's gains eventually dwarf the loser's total loss, leading to strong positive returns.

Compounding is a fragile process. Every portfolio adjustment, like trimming or panic selling, is like opening a door and letting heat escape. Treating your portfolio as a contained machine that works best when untouched reframes "doing nothing" as a strategic, structural advantage.

The key to long-term wealth isn't picking the single best investment, but building a portfolio that can survive a wide range of possible futures. Avoiding catastrophic losses is the most critical element for allowing wealth to compound over time, making risk management paramount.

Conventional definitions of risk, like volatility, are flawed. True risk is an event you did not anticipate that forces you to abandon your strategy at a bad time. Foreseeable events, like a 50% market crash, are not risks but rather expected parts of the market cycle that a robust strategy should be built to withstand.

The smooth exponential curve of compounding is a myth. In reality, it occurs in a world of shocks and uncertainty. True long-term compounding isn't just about picking winners; it's the result of having a robust process that allows you to survive the inevitable randomness and volatility along the way.

Howard Marks argues that you cannot maintain a risk-on posture and then opportunistically switch to a defensive one just before a downturn. Effective risk management requires that defense be an integral, permanent component of every investment decision, ensuring resilience during bad times.

A core discipline from risk arbitrage is to precisely understand and quantify the potential downside before investing. By knowing exactly 'why we're going to lose money' and what that loss looks like, investors can better set probabilities and make more disciplined, unemotional decisions.

Warren Buffett's early partner, Rick Gurren, was as skilled as Buffett and Munger but wanted to get rich faster. He used leverage, got wiped out in a market downturn, and missed decades of compounding. This illustrates that patience and temperament are more critical components of long-term success than raw investing intellect.