The numbers you share paint the perfect picture of Bitcoin's antifragility. A Fear Index at 21 (extreme fear) shows market emotion, while the network responds with a record hashrate (~1.05 ZH/s) and difficulty near its all-time high. It's a real-time demonstration of the principle you highlighted: human emotions fluctuate, the protocol, governed by mathematics, continues inexorably producing blocks, secure and decentralized. Fear is a market datum, network security is a mathematical fact. A beautiful contrast.