Regarding the definition of the Efficient Market Hypothesis, fundamental analysis is also futile because all known information—such as company financial reports, earnings expectations, dividend policies, industry trends, and all potentially influential factors that analysts might research—has already been reflected in the company's stock price.

So what to do? Rely only on betting on the future?
Since all known information is already reflected in the price, the only remaining opportunity to make money is: who has a more accurate judgment of the future than the market?
Or during market panic, when prices plummet, and the market hypothesis fails, take the opportunity to buy cheap.