So, the Xerox guys went to this meeting and some Stanford guy would lay a design idea out on the table and the Xerox guy would say, "Well yes, but if you do that you might have trouble with this idea over here or with this feature over here or this will get in the way of that." And this conversation went around and around for a few times and finally one of the Stanford guys sat back from the table and said, "You guys have already done this, havent you?" And indeed, they had. So, Vint Cerf andBobKahnowetheirfame to the Xerox attorneys. If it werent for the Xerox attorneys nobody would have ever heard of TCP/IP. TCP/IP designs were based a lot on PUP.