Had a great chat with Donovan today, about newpb and E and secure python and concurrency management. It turns out we have some of the same ideas about interesting things to do with these kinds of tools. He pointed me at a language named Io that's doing some neat stuff with lightweight coroutines, and had some interesting thoughts on coroutines in python (making protocol-parsing code look a good bit simpler than the purely data-driven model that twisted Protocol classes tend to have).