@jeanyang - Thanks, this is a terrific answer! "When you only have access control, you're trusting the programmer to tell you correctly at one point where a pi

@jeanyang - Thanks, this is a terrific answer! "When you only have access control, you're trusting the programmer to tell you correctly at one point where a piece of data is going." Right, that pretty much sums it all up, and I have my suspicions (independent of your response) that something like Jeeves could add value even to a "state of the art" company like Facebook :) I'll be watching your project with great interest and may even follow up with you "offline" once I dig in some more, because I think you're really onto something of great importance. Any sufficiently complex enterprise system eventually needs something not too different from what you're working on here...