In that case, there is no learning experience. Human nature stays the same, all of the technology in the world can't get emotions out of investing. In 1989, the Japanese had the most technologically advanced economy and markets in the world. But excesses on the upside were seen for what they were which lead to excesses on the downside. The higher you go the harder you fall.
Human nature is the same, in Tokyo or New York.
Whatever the event is that will drive risk up and stocks down will not carefully avoid your favorite stocks. It will be a macro event. A big picture change that effects all stocks. During a financial crisis, risk aversion rises dramatically, and deliberate trading strategies are replaced by rising fear-induced disengagement. People head for the hills during a crisis.