Mass-In-Mass-Out explains mother belly without 'pregnancy' - By Eliezer Yudkowsky.

In this post Eliezer Yudkowsky writes a satirical news article in which physicists "disprove" pregnancy by showing that women's weight gain during gestation is fully explained by increased eating and drinking, a mass-in-mass-out (MIMO) balance, and therefore no underlying biological phenomenon need exist. The piece is a sustained analogy to the Calories In, Calories Out (CICO) framing of obesity: by substituting pregnancy for fat gain, Yudkowsky exposes how a thermodynamically true but causally vacuous accounting identity can be used to deny the existence of the underlying biological drivers (hormones, appetite regulation, metabolic adaptation) that actually determine the outcome, and how "it's just voluntary overconsumption" is a non-explanation masquerading as a complete one. https://x.com/allTheYud/status/2044220552735535545?s=20 Get full access to Askwho Casts AI at askwhocastsai.substack.com/subscribe