Policy Tensor

Retrenchment Masquerading as Escalation

News of the kidnapping set off a cottage industry of takes by journalists, academics and opinion makers.

Jan 11 • Policy Tensor

23

36

4

December 2025

Height gains predict future productivity growth

The biological channel of modernization

Dec 24, 2025 • Policy Tensor

15

4

2

England did not escape the Malthusian Trap first

When I began reading Angus Bylsma’s Substack, I sort of assumed he was a professor of history at an elite university because his reviews were…

Dec 18, 2025 • Policy Tensor

21

11

1

On the Strategy of Coalition Warfare

Is the whole bigger than the sum of the parts?

Dec 13, 2025 • Policy Tensor

14

2

Heads I win; tails you lose

Only the house wins

Dec 2, 2025 • Policy Tensor

6

2

3

November 2025

Has Intergenerational Progress Stalled?

Evidence of regression from IPUMS

Nov 20, 2025 • Policy Tensor

14

3

1

October 2025

AI May Already Be Sentient

This is a speciation event

Oct 12, 2025 • Policy Tensor

27

8

5

September 2025

The Military Potential of the Male Lineage Group

British social anthropology reconsidered

Sep 30, 2025 • Policy Tensor

30

7

6

Suicide and the Crisis of Meaning

Are we a barbaric civilization?

Sep 9, 2025 • Policy Tensor

28

7

8

The War of Numbers

Testing Todd's demographic defense hypothesis

Sep 1, 2025 • Policy Tensor

14

7

3

August 2025

The Demographic Modernization of the Muslim World

I just finished reading Youssef Courbage and Emmanuel Todd’s A Convergence of Civilizations: The Transformation of Muslim Societies Around the World…

Aug 24, 2025 • Policy Tensor

39

15

9

The Lewisian Model of Unequal Exchange

The catastrophic failure of the law of one price

Aug 11, 2025 • Policy Tensor

15

3

2