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← Adaptation accounts for only about 2% of the change in human gene…
17 connected korrents · 9 moments on record from 15 May 2025 to 7 Sept 2026.
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America Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: Adaptation accounts for only about 2% of the change in human gene frequencies; the other 98% is migration, mixture and drift. Adaptation accounts for only about 2% of the change in human gene frequencies; the other 98% is migration, mixture and drift. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: Population size is not what limited human adaptation; time is. A selection coefficient of half a percent works as well in a thousand people as in a million. — tap to centre the map on it Population size is not what limited human adaptation; time is. A selection coefficient of half a percent works as well in a thousand people as in a million. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere. — tap to centre the map on it Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: Periods of migration are the worst moments to look for natural selection, not the best, because they drown the signal in huge frequency swings. — tap to centre the map on it Periods of migration are the worst moments to look for natural selection, not the best, because they drown the signal in huge frequency swings. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: The selection signal on the genetics of schooling is not a European artefact: the same variants predict years of school in China, a population disconnected from Europe for the whole period. — tap to centre the map on it The selection signal on the genetics of schooling is not a European artefact: the same variants predict years of school in China, a population disconnected from Europe for the whole period. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: Reproductive incompatibility between diverging human lineages grows roughly as the square of their separation time, because it takes pairs of interacting genes. — tap to centre the map on it Reproductive incompatibility between diverging human lineages grows roughly as the square of their separation time, because it takes pairs of interacting genes. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: There is more room at the top for every human trait: push selection harder in any direction and the mean would move, at some cost elsewhere. — tap to centre the map on it There is more room at the top for every human trait: push selection harder in any direction and the mean would move, at some cost elsewhere. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: For any trait built out of many mutations, all the variation needed to move a population to a new adaptive set point already exists inside it. — tap to centre the map on it For any trait built out of many mutations, all the variation needed to move a population to a new adaptive set point already exists inside it. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: Ancient DNA has been a triumph about migration and a failure about biology, and the reason is simply that the samples were too small. — tap to centre the map on it Ancient DNA has been a triumph about migration and a failure about biology, and the reason is simply that the samples were too small. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: A Chinese crewed landing on the Moon before America returns would be a defeat for the free world. — tap to centre the map on it A Chinese crewed landing on the Moon before America returns would be a defeat for the free world. Last stated 3 weeks ago
18 Aug 2026
CH
Casey Handmer — holds since 2025-10-31 — tap for who they are
EB
Eric Berger — holds since 2026-08-18 — tap for who they are
Same subject: A country cannot fund its own industrial strategy and call the same policy cheating when China does it. — tap to centre the map on it A country cannot fund its own industrial strategy and call the same policy cheating when China does it. Last stated a year ago
15 May 2025
HR
Hannah Ritchie — holds since 2025-05-15 — tap for who they are
Same subject: A few square miles at the Moon's south pole are the only lunar real estate that matters, and whoever gets there first sets the terms. — tap to centre the map on it A few square miles at the Moon's south pole are the only lunar real estate that matters, and whoever gets there first sets the terms. Last stated 3 weeks ago
18 Aug 2026
EB
Eric Berger — holds since 2026-08-18 — tap for who they are
Same subject: A company doing something at the edge of the Overton window has to hold two cultures at once — the true believers and the serious professionals who think they are crazy — and integrating them is what makes it work. — tap to centre the map on it A company doing something at the edge of the Overton window has to hold two cultures at once — the true believers and the serious professionals who think they are crazy — and integrating them is what makes it work. Last stated a month ago
7 Aug 2026
MH
Max Hodak — holds since 2026-08-07 — tap for who they are
Same subject: A new world order based on raw power is being drawn right now, and Europe has to fight for its place in it. — tap to centre the map on it A new world order based on raw power is being drawn right now, and Europe has to fight for its place in it. Last stated 12 months ago
10 Sept 2025
UL
Ursula von der Leyen — holds since 2025-09-10 — tap for who they are
Same subject: A tiny fraction of ancestry can carry the most important thing about a population: Yamnaya is only a few percent of DNA in India and yet it brought the language. — tap to centre the map on it A tiny fraction of ancestry can carry the most important thing about a population: Yamnaya is only a few percent of DNA in India and yet it brought the language. Last stated 4 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — tap for who they are
Same subject: A country cannot have radical technological breakthroughs and also refuse to tolerate uncomfortably rich people, because the financial system it resents is what funds the innovation. — tap to centre the map on it A country cannot have radical technological breakthroughs and also refuse to tolerate uncomfortably rich people, because the financial system it resents is what funds the innovation. Last stated a year ago
13 Aug 2025
KJ
Keyu Jin — holds since 2025-08-13 — tap for who they are
Same subject: A country's large trade deficit in manufactured goods reduces its manufacturing employment below what it would be with balanced trade. — tap to centre the map on it A country's large trade deficit in manufactured goods reduces its manufacturing employment below what it would be with balanced trade. Last stated today
7 Sept 2026
PK
Paul Krugman — holds since 2026-09-07 — tap for who they are
Same subject: A large, sustained AI capability lead by either the US or China could shift the global balance of power between them. — tap to centre the map on it A large, sustained AI capability lead by either the US or China could shift the global balance of power between them. Last stated 2 days ago
5 Sept 2026
NS
Noah Smith — holds since 2026-09-05 — tap for who they are
At the centre
Adaptation accounts for only about 2% of the change in human gene frequencies; the other 98% is migration, mixture and drift.
Holds DR David ReichRead this korrent →
Population size is not what limited human adaptation; time is. A selection coefficient of half a percent works as well in a thousand people as in a million.
Holds DR David Reich
Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere.
Holds DR David Reich
Periods of migration are the worst moments to look for natural selection, not the best, because they drown the signal in huge frequency swings.
Holds DR David Reich
The selection signal on the genetics of schooling is not a European artefact: the same variants predict years of school in China, a population disconnected from Europe for the whole period.
Holds DR David Reich
Reproductive incompatibility between diverging human lineages grows roughly as the square of their separation time, because it takes pairs of interacting genes.
Holds DR David Reich
There is more room at the top for every human trait: push selection harder in any direction and the mean would move, at some cost elsewhere.
Holds DR David Reich
For any trait built out of many mutations, all the variation needed to move a population to a new adaptive set point already exists inside it.
Holds DR David Reich
Ancient DNA has been a triumph about migration and a failure about biology, and the reason is simply that the samples were too small.
Holds DR David Reich
A Chinese crewed landing on the Moon before America returns would be a defeat for the free world.
Holds CH Casey HandmerEB Eric Berger
A country cannot fund its own industrial strategy and call the same policy cheating when China does it.
Holds HR Hannah Ritchie
A few square miles at the Moon's south pole are the only lunar real estate that matters, and whoever gets there first sets the terms.
Holds EB Eric Berger
A company doing something at the edge of the Overton window has to hold two cultures at once — the true believers and the serious professionals who think they are crazy — and integrating them is what makes it work.
Holds MH Max Hodak
A new world order based on raw power is being drawn right now, and Europe has to fight for its place in it.
Holds
A tiny fraction of ancestry can carry the most important thing about a population: Yamnaya is only a few percent of DNA in India and yet it brought the language.
Holds DR David Reich
A country cannot have radical technological breakthroughs and also refuse to tolerate uncomfortably rich people, because the financial system it resents is what funds the innovation.
Holds KJ Keyu Jin
A country's large trade deficit in manufactured goods reduces its manufacturing employment below what it would be with balanced trade.
Holds PK Paul Krugman
A large, sustained AI capability lead by either the US or China could shift the global balance of power between them.
Holds