The lesson I take from the GameStop affair is that the stock market does not necessarily reward investment sophistication but is exquisitely responsive to investment speculation. This podcast (4:29) argues that no matter how smart you as an individual may be, your chances of success in the stock market are overwhelmingly influenced by how dumb everyone else is. To succeed in such a market, we must take a self-consciously long-term approach, as if we’re purchasing shares for our grandchildren. Learn more about your ad choices. Visit megaphone.fm/adchoices