I find this argument ingenuous.
As a recent news story  shows, the "firewall" between private-sector
and government databases can be anything but.
Key Logic, noting similar problems with software , developed a
capability-based OS. Despite its elegant architecture, I can't
imagine that its underlying abstractions would adapt well to
Do the trust-mongers on FoRK have solutions to this sort of problem?
Are they optimal? (for *whom* are they optimal? :-)
To quote inFormation: "computers make people easier to use all the time"
 sorry, not Raytheon's... I believe this is a dead-trees only pub.