Except that's not what effective means in the context of the DMCA. If "effective" mechanisms existed in that sense (they don't), there would be no need for the

Except that's not what effective means in the context of the DMCA. If "effective" mechanisms existed in that sense (they don't), there would be no need for the law. Effective in the DMCA sense means "intended to have the effect of..." it does not mean the mechanisms have to be foolproof. This is also why the DMCA is a bad law, because it harms legitimate use while doing almost nothing to actual cases of piracy.