Scoble captures a whiteboard presentation on the architecture of Flash by a couple of adobe seniors. If you’ve been hearing about “apollo” and “flex” but don’t really grok them this may help fill in the gaps. I’d be remiss if I didn’t observe that from a management standpoint flash is a colossal pita…very few people understand it, the good ones tend to have a prima donna streak — and get away with it because they’re in such high demand — and the code is locked up in a binary format that can’t easily be tracked between revisions. The major reasons to use flash are a) reliable animation or b) easy youtube-style embedability. Otherwise stick to ajax.