Interstate war escalates like a contest between rival crabs

Evidence

For political arms races, the best parallel with animals is not the gradual turnover in populations we’ve focused on thus far, but rather a confrontation between two rival males—two crabs, for example, that face off in the sand. Who will back down? An arms race between states erupts in the same way a contest between crabs escalates; neither yields, pushes give way to grabs and jabs, grappling to smashing, and then pounding, and finally unrestricted war. When it comes to warfare, states behave just like crabs on a beach. — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 554

Categorization

• XREF: This is the chapter’s most explicit animal-human warfare parallel, directly serving the reading purpose; connects to the book’s earlier crab/weapon escalation discussions. — connects to: Bases surrounding a rival power provoke dangerous escalation; Evenly matched rival states with WMDs pose civilization-scale escalation risk — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 608; Fortification-artillery escalation mirrors predator-prey arms races, not rival contests

Related

• State arms races mirror single male-male animal contests, not evolutionary turnover (similarity 0.83)
• Evenly matched rival states with WMDs pose civilization-scale escalation risk (similarity 0.83)
• Fortification-artillery escalation mirrors predator-prey arms races, not rival contests (similarity 0.81)
• States only fight rivals of matched size, preventing most conflicts (similarity 0.81)
• Bases surrounding a rival power provoke dangerous escalation (similarity 0.79)
• Most animal confrontations resolve without escalation because threats are assessed first (similarity 0.79)

Broader Connections

• Fortification-artillery escalation mirrors predator-prey arms races, not rival contests #responds-to (0.60)
• Bases surrounding a rival power provoke dangerous escalation #exemplifies (0.50)
• Evenly matched rival states with WMDs pose civilization-scale escalation risk #exemplifies (0.40) — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 608