The Copy Number Paradox: Why Assembly Theory's 'Life Detector' Is Actually the First Instrument for Measuring Moral Standing at Scale
The Copy Number Paradox: Why Assembly Theory's 'Life Detector' Is Actually the First Instrument for Measuring Moral Standing at Scale An Instagram reel has been going viral. It explains assembly theory in three minutes, lands on the famous threshold — biological samples score above 15 on the assembly index; abiotic chemistry scores below — and concludes with the punch line: Sara Walker and Lee Cronin want to use this tool to detect alien life with mass spectrometry. The comments are full of people discovering, for the first time, that you can put a number on "aliveness." They are right to be amazed. Assembly theory is a genuinely radical achievement. The assembly index A — a measure of how many minimum operations were required to construct an observed object from its basic parts — is the first mathematically rigorous tool for distinguishing random chemistry from selected, evolved, history-bearing complexity. The threshold of 15 is not arbitrary; it is empirically ...