Recently, my understanding of tolerance for error has deepened. No matter the market, the process of confirming a bottom is always repetitive. Even if you want to 'buy the dip' during this process, you must prioritize indices over individual stocks. Many individual stocks may look strong during a downturn, but when the actual rebound comes, they start to catch up with the drop. Choosing indices can help avoid this catch-up drop trap as much as possible, improving win rates and operational tolerance for error. Betting solely on individual stocks always has a much lower tolerance for error compared to indices.