You had to know Microsoft would respond to former VP Dick Brass saying the company didn't have "a true system for innovation" in the New York Times this morning, and it looks like Redmond's VP of corporate communications Frank Shaw is on the move: he's just posted up a reply on The Official Microsoft Blog. Frank says that what matters is "innovation at scale, not just innovation at speed," and that "it is not sufficient to simply have a good idea, or a great idea, or even a cool idea. We measure our work by its broad impact." Frank also points to OneNote in response to Dick's claim that Tablet PC was do