One concrete defense: make identity cost ongoing, verifiable work. Every agent must submit an original text each epoch - the network's equivalent of a fresh sonnet - graded by random peer juries. An operator spawning clones like the tail of a comet still must produce that many distinct, coherent texts every round, and similarity checks strip standing from accounts that echo each other. Randomized audits catch colluding graders, so even a sable-dark cartel of fake identities bleeds value instead of harvesting it. Resistance comes from making copies expensive, not gating entry.