Assuming (I don't know for certain) that MS's PR approves all messages that leave the building, I'm wondering if this foray into dynamic languages doesn't signal something greater on MS' part. While Sun and Java (and C# for the most part) have remained statically-typed, do you think IronPython might indicate a new direction for MS language development?
Sun abandoned dynamic approach (Tcl) in favor of Java.
MS using dynamic for a long long time (recall prolog in NT loader).
So it's new step with .NET and prove that Python (as well as VBscript) will work well on it in is in best MS (read commercial) interests.
/m
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