Descartes's search for first principles introduces the appeal of a clean strategic model. Jeune Ecole reasoning began with a current naval problem and followed a logical path toward a proposed answer. The weakness was that the path was one-sided: it treated the opponent's choices and fleet as fixed rather than adaptive. That test of adaptive reasoning frames the episode's account of French cruiser policy.
Chapter · 2:33-5:01
Descartes, first principles, and Jeune Ecole's one-sided logic
The philosophical opening turns the video's title into a warning about naval theories that solve a fixed problem without allowing the enemy to react.