Blockchain is used as a stand-in financial system for those who don't or can't use the incumbent ones (for banking, commerce, gambling, and so on). AI is nowhe

Blockchain is used as a stand-in financial system for those who don't or can't use the incumbent ones (for banking, commerce, gambling, and so on). AI is nowhere close to delivering on its promises. But it's pretty useful for many tasks. Quantum computers are vaporware. Quantum sensors are already here and game-changing. But just like AI, has failed to live up to hype. --- Crypto is already here and makes good on its promises: decentralized finance. Full disclosure: I do not own any crypto besides negligible sums in forgotten wallets.