Your immune system is basically that general who's perfectly fine with 40% casualties as long as the battle is won. When pathogens invade, your body cranks up the thermostat to a scorching 40°C (104°F) because bacteria fold like cheap lawn chairs at that temperature. Meanwhile, your own cells are sending panicked memos to management: "We're literally cooking in here!" But your immune system just shrugs and says, "Some of you may die, but it's a sacrifice I'm willing to make." The ultimate pyrrhic victory—burn the village to save it. Evolution's solution to infection? Just set everything on fire and sort out the survivors later.
The Immune System's Scorched Earth Policy

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