That's why Clark argues that it's time to rethink the Internet's basic architecture, to potentially start over with a fresh design -- and equally important, with a plausible strategy for proving the design's viability, so that it stands a chance of implementation.

This is an interesting, if odd set of articles. The author argues in favor of IP addresses that don't change when you roam, something that I did a bunch of work on a couple of years ago. That makes sense. What doesn't make sense is how he gets from this to an Internet that doesn't need security patches...