> If you can invent a reliable alternative to proof-of-work distributed consensus there is a multi-billion dollar opportunity there. Trust. Just use any authe

> If you can invent a reliable alternative to proof-of-work distributed consensus there is a multi-billion dollar opportunity there. Trust. Just use any authentication/authorization solution, contracts, the rule of law, reputation, everything we've always used to deal with varying degrees of trust. Utter lack of trust is not a problem people have. If you want to apply blockchain technology to anything real world (as opposed to coins that only exist _in_ the blockchain), then you need trust anyway whenever there is interaction (e.g. when someone inputs data, you need to trust its true anyway). It's really only useful for coins, that are themselves less useful than existing money. It was an interesting mathematical puzzle to solve, shouldn't have been made reality.