The Last Second Of Your Life Will Last Longer Than The First Year

Most people think a year is a year. Your watch agrees. Your calendar agrees. The physics agrees. So why does the summer when you were seven feel like a small country, while last summer feels like a long Saturday? The math says something almost no one notices: by the time you turn nine, you've already lived half your subjective life. And the very last second of it might be larger than the entire first year. In this video, we trace the strange double-logic of felt time — from Paul Janet's 1877 law of subjective duration, to David Eagleman's terrifying free-fall experiment, to the gamma-wave storm measured in the dying mammalian brain. Drawing on Feynman's discussions of time, distance, and the asymmetry of past and future, we ask what your clock is actually counting — and what it isn't. 📚 SOURCES The Feynman Lectures on Physics, Volume I, Chapter 5: "Time and Distance" (1963) The Character of Physical Law, Chapter 5: "The Distinction of Past and Future" (1965) Paul Janet, "Une illusion d'optique interne," Revue Philosophique de la France et de l'Étranger (1877) William James, The Principles of Psychology, Chapter XV: "The Perception of Time" (1890) Chess Stetson, Matthew Fiesta, David Eagleman, "Does Time Really Slow Down During a Frightening Event?" PLOS ONE (2007) Jimo Borjigin et al., "Surge of Neurophysiological Coherence and Connectivity in the Dying Brain," PNAS (2013) ⏱️ TIMESTAMPS 00:00 — A second is a second. Or is it? 01:42 — What physics actually says about clock time 03:18 — The summer-when-you-were-seven problem 05:04 — Paul Janet's eleven-word law of inner time 07:21 — Why half your subjective life is over by age nine 09:38 — The four forces collapsing your adult years 12:15 — The wristwatch that no one could read 14:50 — Gamma storms in the dying brain 17:02 — The two most expensive moments of your life 18:24 — The question for the middle 🎙️ CREDITS Written, narrated, and produced by Feynman Reborn. Inspired by the teaching style and public ideas of Richard P. Feynman. ⚠️ WARNING: [This video is AI-generated (synthetic voice and visuals). It is an original, fictional lecture inspired by Richard Feynman's teaching style and public ideas, and is not an authentic recording, endorsement, or statement by Richard Feynman or his estate. Any resemblance is for educational/creative purposes]