Flex, RIA

I’ve noticed on several occasions that developers starting out with Flex ignore the underlying player and focus their attention on the high level Flex framework … but I feel that it is extremely important to understand Flash Player and its abilities as well to be successful at writing great Flex applications … remember that the only things that you can do with the Flex framework are things that the core Flash Player API allows you to do and nothing more … the Flex framework is just a library making it easier to use that core functionality that the Player provides.

Peter Elst highlighted this presentation on his blog, but I think its important enough to be highlighted again …

Flash Player Internals,
presented by Jim Corbett and Lee Thomason at Adobe MAX.