About

Jacob Falkovich is a data scientist, statistician, and writer based in New York, best known as the creator of the acclaimed blog PUTANUMONIT and the relationship newsletter Second Person.

Writing under the motto “rationality in love,” he applies quantitative tools—Bayesian probability, game theory, data modeling, and behavioral economics—to messy, deeply human aspects of life: modern dating, romantic relationships, social status, cognitive biases, and community dynamics. His essays are celebrated across the rationalist and tech communities, frequently appearing on LessWrong and Astral Codex Ten.

On putanumonit.com (“Put a number on it”), he explores how mathematical rigor and probabilistic thinking can bring clarity, agency, and genuine warmth to everyday human decisions. His writing is distinguished by its playful humor, clear-eyed realism, and rare ability to bridge hard data with heartfelt empathy.