The Unbearable Semiheaviness Of Being
Read the original on Astral Codex Ten →
Summary
A curiosity piece on water isotopes: the Castro-poisoning riddle (repeatedly freezing water enriches deuterium -> semiheavy water is a slow poison), then the mirror-image 'light water' alt-medicine fad (deuterium-depleted water as longevity/anti-cancer cure). Scott loves the theory ('it's even MORE water than regular water'), canvasses its evolutionary/molecular/anthropological/oncological arguments, then debunks most (the Hunza aren't actually long-lived; most positive studies are one Hungarian team), landing on the replication-crisis point: every alt-med fad has evidence about this good (homeopathy has positive RCTs too), so where do you draw the line? Marvels at how many hidden dimensions reality varies along (Martian water has 5x deuterium and might sicken astronauts).
Why this score
Quality 67 · Strong. Strong (low): engaging, genuinely curious, with a real epistemics point about weak converging evidence, but self-consciously minor ('probably doesn't have enough medical benefits to have been worth my time to research or yours to read').
Claude’s paradigm shift 48 · Moderate. Moderate: the light-water-vs-homeopathy framing and the 'so many dimensions reality varies along' angle are fresh, but slight.
Real-world impact 2 · Minor. Minor/within-blog: a curiosity with alt-medicine relevance but no material footprint.