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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 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.
Health
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.
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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.
What ‘just go for a walk’ leaves out
The evidence on exercise and depression is weaker than the headlines and more interesting than the sceptics allow. It points at structure and supervision, not walks.
The eight-glasses rule is a sentence someone deleted
The 1945 document blamed for the rule said most of your water comes from food and that thirst is an adequate guide. Both sentences were cut. Here is what the evidence actually shows.
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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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.
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 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.
Breakfast is not the most important meal of the day
The randomised trials point gently the other way. But the real story is the audit that found only 17% of citations to a key trial described its results accurately.
Renting is not throwing money away, but the real argument is stranger
Housing’s celebrated 7% return is almost all rental yield. Real capital gains run about 1% a year — and the variable that decides the answer is whether you actually invest the difference.
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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 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.
Renting is not throwing money away, but the real argument is stranger
Housing’s celebrated 7% return is almost all rental yield. Real capital gains run about 1% a year — and the variable that decides the answer is whether you actually invest the difference.
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.