Risk
Lindy Effect
You light a stub of wax in a tin holder. It gutters politely, already half-used. Beside it on the table: a fat, clothbound book whose pages smell like starch and dust; a river-smoothed stone, cold in your palm, older than the street outside. If you had to bet, you know where the longer futures sit. The flame feels dated by minutes. The book feels good for decades. The stone doesn’t care about you at all; it will outlast the paint on the city and most of its buildings.
The Lindy effect says: for things that do not die of age — books, tools, ideas — expected remaining life grows with current age. A book in print for a century will likely be in print for another. The hand plane that still works after twenty years will work for twenty more. Latin has refused to vanish for two millennia; so has the arch. New slang, new apps, new diets flicker like candles. When something nonperishable has already lasted, it has proved it resists the usual ways of dying.
Therefore
When you must choose what to learn, build with, or keep, weight by age. If a nonperishable has survived X years, budget roughly X more.
Lindy’s, 1964
After midnight at Lindy’s on Broadway, comedians and agents lingered over coffee, trading guesses about which television acts would still be on air next season. Albert Goldman wrote it down in 1964: a show twenty weeks old likely had about twenty weeks more; a newborn might vanish by Tuesday. Longevity predicted more longevity. Years later Benoit Mandelbrot plucked the rule from the smoke and gave it mathematics and a name, stretching it to books, ideas, and technologies that do not age like animals. The longer they had already run, the slower their mortality clock seemed to tick.
Related patterns
A small reminder, on a backpack flap or a kitchen door, that age is evidence — and each year a nonperishable survives lengthens the road ahead.
$3.50
2.5 inches vinyl · weatherproof · ships in 1–3 days