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The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
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The four-day week trials mostly didn’t test a four-day week
The pilots cut about four hours a week, not eight. Iceland never ran one. And the best-instrumented trial found healthier workers, unchanged revenue, and a significantly faster pace of work.
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The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
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The sleep chart everyone copies has a footnote nobody reads
The age-by-age sleep chart is a compromise document, and the panels that wrote it said so. What the primary sources actually show about how much sleep you need.
The 21-day habit rule came from a plastic surgeon’s book preface
Maxwell Maltz was describing how long patients took to get used to a new face. When researchers finally measured habit formation, the range ran from 18 days to 254.
The Vitamin D Trials Nobody Talks About
Two of the largest supplement trials ever run found almost nothing. Then the Endocrine Society withdrew the threshold that made half the country deficient in the first place.
The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
Sport news
The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
The people who found the Blue Zones are quietly walking them back
Nicoya’s advantage inverted in forty years. Okinawa fell from 4th to 26th. And the researchers conceding this are the ones who identified the zones in the first place.
The Open Office Was Built on a Measurement. Then Nobody Measured It Again for...
When researchers finally put sensors on employees before and after a redesign, face-to-face interaction fell by about 70%. The study did not measure productivity — and after six decades of fit-outs, almost nothing has.
The sleep chart everyone copies has a footnote nobody reads
The age-by-age sleep chart is a compromise document, and the panels that wrote it said so. What the primary sources actually show about how much sleep you need.
The four-day week trials mostly didn’t test a four-day week
The pilots cut about four hours a week, not eight. Iceland never ran one. And the best-instrumented trial found healthier workers, unchanged revenue, and a significantly faster pace of work.
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Your Myers-Briggs type is four coin flips in a trench coat
The MBTI measures four real traits with decent reliability, then discards most of what it measured by drawing a line through the middle of a bell curve.
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The 50% Divorce Rate Was True for About One Year. You Can Name It.
In 1981 the United States recorded 2,422,000 marriages and 1,213,000 divorces. Divide one by the other and you get 50.1%. It was also the peak year. The statistic has not been updated since.
The Open Office Was Built on a Measurement. Then Nobody Measured It Again for...
When researchers finally put sensors on employees before and after a redesign, face-to-face interaction fell by about 70%. The study did not measure productivity — and after six decades of fit-outs, almost nothing has.
Nobody Is Left-Brained. The Man Who Won the Nobel for Split Brains Said So...
A study of 1,011 brains looked for people whose left or right hemisphere ran stronger overall. It found lateralised functions everywhere and lateralised people nowhere.