In 2009, Bitcoin proved that thousands of computers that did not trust each other could agree on a shared ledger without any central authority. The mechanism was cryptographic — proof-of-work consensus — and it worked. Since then, DAOs (decentralized autonomous organizations), quadratic voting, liquid democracy, token-weighted governance, and AI-mediated deliberation have each proposed new consensus mechanisms. Most will fail. One or two will compound. The period between 'mass democracy is the only option' and 'mass democracy is one option among several' is being measured in years, not centuries.