"Let's create systems where we don't need to use firewalls/authentication/application patches/defensive programming" The perfect is the enemy of the good. Defe

"Let's create systems where we don't need to use firewalls/authentication/application patches/defensive programming" The perfect is the enemy of the good. Defense in depth is a winning strategy. To be clear: we should also not be polluting/littering/etc. That's part of defense in depth.