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← Adaptation accounts for only about 2% of the change in human gene…
17 connected korrents · 10 moments from 28 Jan 2022 to 11 Sept 2026.
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evolutionary biology
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war 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 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 6 months ago
8 May 2026
DR
David Reich — holds since 2026-05-08 — 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 3 months ago
7 Aug 2026
MH
Max Hodak — holds since 2026-08-07 — tap for who they are
Same subject: A heavily centralised state is the most fragile kind: when Rome’s centre failed, its successors were left without the resources or administration to do what it had done. — tap to centre the map on it A heavily centralised state is the most fragile kind: when Rome’s centre failed, its successors were left without the resources or administration to do what it had done. Last stated 5 years ago
28 Jan 2022
BD
Bret Devereaux — holds since 2022-01-28 — 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 a year ago
10 Sept 2025
UL
Ursula von der Leyen — holds since 2025-09-10 — tap for who they are
Same subject: 'As long as it takes' lacks urgency, and it is a formula available to Ukraine's allies precisely because they are not the ones doing the fighting. — tap to centre the map on it 'As long as it takes' lacks urgency, and it is a formula available to Ukraine's allies precisely because they are not the ones doing the fighting. Last stated a year ago
10 Oct 2025
LF
Lawrence Freedman — holds since 2025-10-10 — tap for who they are
Same subject: 9/11 and Osama bin Laden's actions fundamentally shaped the world we live in today. — tap to centre the map on it 9/11 and Osama bin Laden's actions fundamentally shaped the world we live in today. Last stated a month ago
11 Sept 2026
MY
Matthew Yglesias — holds since 2026-09-11 — tap for who they are
Same subject: A ceasefire along the current lines would end the killing and still leave a long-term settlement between Russia and Ukraine possible. — tap to centre the map on it A ceasefire along the current lines would end the killing and still leave a long-term settlement between Russia and Ukraine possible. Last stated 2 months ago
26 Aug 2026
BM
Branko Milanovic — holds since 2026-08-26 — tap for who they are
Same subject: A nation of a million people cannot rule hundreds of millions by warfare; the Mongol Empire lasted because it offered its subjects things they actually wanted. — tap to centre the map on it A nation of a million people cannot rule hundreds of millions by warfare; the Mongol Empire lasted because it offered its subjects things they actually wanted. Last stated a year ago
31 Jul 2025
JW
Jack Weatherford — holds since 2025-07-31 — tap for who they are
Same subject: A nuclear war between the United States and Russia would kill five billion people. — tap to centre the map on it A nuclear war between the United States and Russia would kill five billion people. Last stated 3 years ago
22 Mar 2024
AJ
Annie Jacobsen — holds since 2024-03-22 — tap for who they are
Same subject: A pro-West stance is mostly right: a world more aligned with the CCP or Russia seems a bad one. — tap to centre the map on it A pro-West stance is mostly right: a world more aligned with the CCP or Russia seems a bad one. Last stated 2 years ago
15 Oct 2024
NQ
Nabeel S. Qureshi — holds since 2024-10-15 — 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 Read 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
Natural selection in humans has not been quiescent: it is tugging almost every position in the genome in one direction or another, everywhere.
Holds
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
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
Reproductive incompatibility between diverging human lineages grows roughly as the square of their separation time, because it takes pairs of interacting genes.
Holds
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
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
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
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
A heavily centralised state is the most fragile kind: when Rome’s centre failed, its successors were left without the resources or administration to do what it had done.
Holds
A new world order based on raw power is being drawn right now, and Europe has to fight for its place in it.
Holds
'As long as it takes' lacks urgency, and it is a formula available to Ukraine's allies precisely because they are not the ones doing the fighting.
Holds
9/11 and Osama bin Laden's actions fundamentally shaped the world we live in today.
Holds
A ceasefire along the current lines would end the killing and still leave a long-term settlement between Russia and Ukraine possible.
Holds
A nation of a million people cannot rule hundreds of millions by warfare; the Mongol Empire lasted because it offered its subjects things they actually wanted.
Holds
A nuclear war between the United States and Russia would kill five billion people.
Holds
A pro-West stance is mostly right: a world more aligned with the CCP or Russia seems a bad one.
Holds