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For a long stretch of my life, I measured myself by the rung — what title sat next to my name, and how that lined up against the people I started out with.
Here is the number that stopped me.
By eleven fifteen on the second day, the morning's writing was done.
The cursor blinks. The research is open in nine tabs, the coffee has gone lukewarm, and I have read enough to write a competent summary of the thing.
In 2025, a nationally representative survey of 1,060 US teens found that 72% had tried an AI companion at least once and 52% used one regularly.
You finish work, you close the laptop, and you tell yourself the evening is yours.
Most of us think we judge people piece by piece.
Sixty-six days. That is the average it actually took a group of volunteers at University College London to turn a new behavior into something close to automatic.
Researchers at Brock University surveyed 416 Canadians aged sixty and over who were enrolled in general-interest courses, and what they found cuts against the way most of us think about later-life learning.
The first time Gallup tested it, just 30% of employees said yes — and those who did turned out to be seven times as likely to be engaged at work.
"Each of us lives only in the present, this brief moment; the rest is either a life that is past, or is in an uncertain future." That's Marcus Aurelius, in the A.S.L. Farquharson translation, writing to himself nearly two thousand years ago in the private notebook we now call the Meditations.
I am not a psychologist, and what follows is reading and reflection on a handful of studies, not advice about your life.
