Why Time Speeds Up As You Get Older (And How To Slow It Down)

As a kid, a single summer felt endless. Now a whole year vanishes like a weekend. It isn't your imagination — it's measurable, and the reason is stranger than you think. This is the science of why time speeds up as you age, from Paul Janet's 1897 proportional theory to William James, David Eagleman's terrifying tower experiment, and what you can actually do to slow the clock back down. Sources & further reading: Paul Janet, proportional theory of time perception (1877/1897) William James, The Principles of Psychology (1890) Stetson, Fiete & Eagleman, "Does Time Really Slow Down During a Frightening Event?" PLoS ONE (2007) Claudia Hammond, Time Warped (2012)