Every time volatility spikes it is important to remember that the stock market does not exist to...: Warren Buffett long ago provided a piece of investing advice that could have helped investors in the most recent stock whipsaw. Fears just a few weeks ago that Turkey would crash the global economy were followed up in the past two trading sessions by new records being set in the Dow, S&P 500 and Nasdaq. How is that possible? The answer from the billionaire investor, provided over the years at Berkshire Hathaway annual meetings, is straightforward, and it is nothing revolutionary.