User intuited markets are connected -> exploitable? Measured equity/bond/gold/commod/trend/crypto
(2019-26): contemporaneous corr low (+0.03 avg; equity-crypto +0.43, equity-trend -0.28), crisis
corr STABLE (didn't spike -> diversification held in stress), lead-lag ~0 (trade OOS Sharpe -1.01).
Connectedness is priced-in -> value is diversification (already in the book, validates it beating
60/40 low-DD), not a predictive signal. Same efficient wall for cross-market alpha.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>