Speaking of the ARPANet:
"The processing and distribution technology and the storage technology are going to make it possible to get over onto a new technological base for intellectual efforts before our ponderous social processes will let us. I think more people need to get in there and think about the social processes." -JCR Licklider, 1972
What we see today is the result of not thinking enough about the social processes. The social implications of the Internet are terrifying and encouraging at the same time.