Awesome Buffett directly tore apart the traditional financial circle's crazy brainwashing theory of diversified investment! In the eyes of most retail investors who only follow the trend, dispersing funds into dozens of targets seems like a perfect moat to resist risks. But he pointed out to the point that so-called diversified investment is just a bulletproof vest against one's own ignorance. If you have no knowledge of macro logic and underlying assets, buying the entire market is indeed a safe choice without any flaws. But if you truly have the analytical ability to see through the asset deck and then spread your money among thirty or forty unrelated targets, it is definitely a complete madness. Because within a person's cognitive boundaries, there are already very few top-level assets that can truly be understood and have absolute dominance. Extracting your most precious bullet from the top ranked excellent target and forcefully feeding it to mediocre projects outside the top thirty is simply insane. He openly stated that his personal core position is always focused on the asset he can fully see through, which actually gives him an absolute sense of security. Throughout history, the enormous wealth that truly transcends social classes has never been built by piecing together fifty mediocre objects. Without exception, they all firmly grasped the highly explosive core assets and held onto them until the end. In this macro game where the winning rate is extremely scarce, targeting the core mainline and attacking heavily is always much more deadly than pepper noodle defense.