Basically all war is caused by a combination of competition over resources, and a fear of/interest in subjugation. There's no such thing as unlimited resources,

Basically all war is caused by a combination of competition over resources, and a fear of/interest in subjugation. There's no such thing as unlimited resources, and there will always be someone who wants to subjugate you, or someone you want to subjugate. Logic doesn't prevent a war. The point of the article is that people thought WWI would not only be impossible, but that it would also be "bloodless". It turned out to be the bloodiest war the world had ever seen. The future big wars will (eventually) turn the world into an apocalyptic hellscape, but the beginning will be fought with robots and big guns. Less infantry, but more damage. Lots more civilians dying of starvation, cold, disease, once critical infrastructure gets taken out. People in cities are mostly dependent on utilities, so once those go, it's going to get chaotic. Also we don't really have industry anymore, so a trade embargo might totally erode our ability to wage war once we exhaust our surpluses.