First try on Flex 2
I think Flex 2 is a formular framework of Flash application, much like VB/C++ to C, it pick out some params from each type of visual object into a script (mxml, xml formatted script), compile automatically depends on those properties.
The alpha 1 release is a memory beast, for my laptop without 1G memory it runs painful and slowly. I have to delete useless mxml to save my poor memory, compile always slowly.
I think Flex is mostly for enterprise domain, fast, easy modified, cheaper(less design tasks), standardized business style flash coding.
