You know how it goes. You spend a few days immersed in talks about clusters and networking, surrounded by kernel hackers, getting three hours sleep per night and living on pizza and caffeine. You return home only to spend the next few weeks in a nocturnal daze of debugging symbols as you flitter between purging your email backlog and coding up that long, inspired list of new features you jotted down on the return journey.

A few weeks later, over breakfast, you suddenly realise what the heck Dave Miller was going on about in his talk...