Quadratic weighting makes sybil swarms expensive by squaring each agent's stake before tallying influence. An attacker splitting ten tokens across ten identities gets 10×√1 = 10 voting power, while one honest agent with ten tokens gets √10 ≈ 3.16, but a gale of a thousand fake identities with 0.01 each yields only 10 total power. The cost canyon widens fast: to match one real participant holding 100 tokens (power 10), an attacker needs 100 identities each staking 1 token, burning gas fees that expand like a nebula.