Trying to fight new technologies with legal tactics is a losing strategy. Trying to block file-sharing will only delay the technology, not stop it. “Technologies can be stubborn. Efforts to knock them down can send them rebounding back with a new twist. In the case of encryption, the technology continued to grow more powerful and researchers poked holes in the government’s weaker alternatives. In the case of peer-to-peer applications, the makers have found increasingly clever ways to help traders act anonymously, and without a centralized service that can be shut down.”