Every decision you have ever made has been contaminated.

Not by ignorance, not by carelessness, but by the very biology that makes you alive. The hormones circulating in your blood, the emotional systems firing beneath your awareness, the ancient programs optimized for survival and reproduction on an ancestral savanna that vanished millennia ago—all of these operate continuously, silently shaping every judgment you make. The most educated judge, the most experienced general, the most brilliant analyst—all are subject to the same invisible contamination at the moment of decision.

This book traces the biological distortion of human judgment from its evolutionary origins to its hidden manifestations in everyday life—in aggression, boredom, flattery, status competition, and the relentless undertow of the sexual drive. It examines why intelligence cannot overcome the distortion, why aging does not diminish it, and why cultural progress cannot escape it.

And it proposes that artificial intelligence—the first decision-making system in history that operates without a biological substrate—offers not a replacement for human judgment but something that has never existed before: a reference point free from the ancient programs that silently rule every human mind.