Based on his comments I am a pretty sure Mr. Singer does not know much about bitcoin.Printing money out of then air, then charging interest on it. Now that is something out of ether. People have woken up, so retire already, or do what ever rich people do when they are no longer relevant.Goldman must be paying this guy to trash btc while they buy, it cheap .Every time some billionaire bashes Bitcoin, it makes me want to buy more crypto. Bitcoin is the consensus value transfer protocol. It's a viral social network.