The age of the law should not be an indicator of how applicative it is. Consider that the All Writs Act was written at essentially the same time as the fourth ammendment. Similarly, it appears to be written broadly with the very intent that it can be applied in many circumstances.<p>What has changed in the past 2 centuries is the way the law is interpreted by the courts. And if this case keeps going it will probably be another that defines what the limits of that law.<p>If there is something you should be concerned about with All Writs it is not its age but its scope. Unless Congress provides a more specific legal framework (which we have seen in a number of other technical cases, for good or, often, ill), it will continue to be decided by judges and justices.