There are many discussions online about making money in the financial markets, and they all point to one phenomenon—compound interest is portrayed as a myth, and in reality, most people can't earn from it. These views do hit the mark, but they are not deep enough.

We must face a harsh fact: in the zero-sum trading world, true winners never make money from the smooth curves promoted by salespeople. They use the same tool—compound interest—but in completely different ways.

Why are their approaches different? Because theoretical models and real markets are fundamentally two different things. The compound interest curve in textbooks is a smooth exponential growth. But that only holds under ideal conditions. In reality? Volatility, drawdowns, and uncertainty are everywhere.

Let's try with real numbers. Suppose you start with a principal of 1 million:
- In the first year, earn 50%, the account becomes 1.5 million
- In the second year, lose 30%, remaining 1.05 million
- In the third year, earn 40%, reaching 1.47 million
- In the fourth year, lose 40%, ending with 882,000

After four years, the power of compound interest didn't grow your wealth; instead, it transferred your money directly to your market opponent's account. This is the true picture for most traders. The problem isn't with compound interest itself, but with your fundamental misunderstanding of the profit flow in the financial markets.