I want you to imagine a time, in the not-too-distant future, where the following things have happened (in this order): 1. Bitcoin futures have started trading on the CME Group Inc.'s futures exchange, which they are scheduled to do by next month.2. JPMorgan Chase & Co. has offered its institutional trading customers access to the bitcoin futures contract through its futures brokerage, as it is contemplating doing.3. Everyone has decided that bitcoin is dumb and its price has collapsed, as JPMorgan Chief Executive Officer Jamie Dimon has said it will.