Group 1 - The core idea emphasizes that quick reactions in investing often stem from fear and greed rather than informed decision-making [2][6][8] - Ordinary investors tend to rely on instinctual responses, which can lead to poor investment choices during market volatility [3][4][6] - The article suggests that true investment opportunities are rare, and most market movements are oscillatory rather than trending [7][24] Group 2 - The concept of "defensive counterattack" is introduced, highlighting the need for ordinary investors to adopt a mindset of caution and strategy [10][17][29] - Key strategies include fishing in less crowded markets, focusing on long-term trends, and developing a "dull sensitivity" to market noise [10][18][43] - The importance of having a simple reaction framework to avoid emotional trading is emphasized, suggesting that investors should prepare for various market scenarios [50][53][54] Group 3 - The article discusses the significance of understanding market trends over focusing on minute details, particularly for non-professional investors [22][29] - It highlights the historical performance of indices like the S&P 500, indicating that long-term investment strategies can yield positive results despite market fluctuations [24][27] - The need for a well-structured investment portfolio that aligns with realistic return expectations is stressed [55] Group 4 - The article outlines four key strategies for defensive counterattack: fishing in less crowded areas, grasping the overall market trend, developing dull sensitivity, and having a unique investment strategy [10][18][43][54] - It emphasizes that ordinary investors should set lower return expectations and focus on consistent execution of their investment plans [55] - The necessity of having contingency plans for market changes is highlighted, allowing investors to remain calm and make informed decisions during volatility [53][54]