wow, the introduction of metadeta in 2001~

first few hosts on the ARPANET - UCLA, SRI, UCSB, and the University of Utah 

first internet was peer-to-peer, not master/client

peer-to-peer as a larger social contruct, client server fits newspapers tx, etc.

"Economists call these kinds of valuable side effects " positive externalities." The canonical example of 
a positive externality is a shade tree. If you buy a tree large enough to shade your lawn, there is a good 
chance that for at least part of the day it will shade your neighbor's lawn as well. This free shade for 
your neighbor is a positive externality, a benefit to her that costs you nothing more than what you 
were willing to spend to shade your own lawn anyway. "

"In real life, trust is often increased by establishing positive reputations and networks 
for conveying these reputations."

key issues with peer-to-peer are human factors......the design is perfect without the humans:

chapters 14-17 beat this point into the ground...