https://www.pcgamer.com/bill-gates-thinks-investing-in-bitcoin-is-crazy-warren-buffett-calls-it-rat-poison/ >There is no shortage of believers in Bitcoin and its underlying blockchain technology, but when it comes to investing in the cryptocurrency, billionaires Warren Buffett and Bill Gates both think it's a bad idea. Crazy, even. >Gates told CNBC that Bitcoin is "one of the crazier, speculative things" he's seen, and that he would "short it if there was an easy way to do it." In the investment world, shorting is when you bet against an asset and make money if its value falls.