Last week’s webinar “Web 2.0 and Rich Internet Applications” discussed the characteristics of various development approaches for building new-style, “live look-and-feel” web apps using Ajax, Flex or Google Web Toolkit (GWT). In particular we discussed how GWT alone among these alternatives provides a “single system image” to the developer, allowing him or her to use the same language on both client and server. It is an advantage for the designer to perceive a single application rather than two distinct applications joined with a pipe. This observation drew an astute question from one of listeners. This question came in after the Q & A was completed (there were a lot of questions!). The question and its …

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