Reinventing the internet

The Economist wonders what the internet would look like if a clean slate redesign was implemented. Read more here and listen to an audio interview with Tom Standage, Technology Editor of The Economist here:

• The internet has been a hotbed of innovation because it’s "dumb". The designers didn’t presuppose how the internet would be used and that has made it extremely flexible. But what we are running into now are scaling and security problems, and some people are asking: if we were building the internet from scratch, what would be the ideal clean-slate design?

Do you think the internet should be redesigned from scratch? What do you think the internet would look like? Do you think that such a redesign could ever realistically happen?