"Robert G. Brown" wrote: > > Ed, are you not paying attention? Read below and draw your own conclusions, please. > It is fundamentally, intrinsically, eternally IMPOSSIBLE TO IDENTIFY > INDIVIDUAL HUMANS on the internet. Who is talking about humans? I am talking about EMAIL ADDRESSES, MTAs, MUAs, END POINTS. Trust at the end points -- the end point is able to do TCP/IP, end points are not human. It is also not relevant if there is, or there is not, a human in control of an end point. It can very well be another machine. I also mentioned that trust should be based on the same definition betwen machines as we use for millenia between humans. Why? So that machines could use well-developed, real-world, tested notions of trust -- and be thus useful as our agents. This answers the rest of your email. Are you paying attention? ;-) Cheers, Ed Gerck PS: BTW, take a look at a work some 5 years ago allowing ISPs to identify who was at the keyboard by their usage pattern, in a household, to properly target advertising. Humans are more identifiable on the Internet than you think. But this is 100% irrelevant to what I wrote about. Humans can't do TCP/IP.