HODL On – In Defense of Bitcoin's Best Investment Strategy In 1987's Black Monday stock market crash, Sam Walton, the world's richest man, lost more than half a billion dollars in a few hours. When reached for comment, Walton said, "It's paper anyway. As far as I'm concerned we're focusing totally on the company doing well and taking care of our customers." He didn't care about dollars; he cared about his asset Wal-Mart, and he still owned that. History of…