I deal a lot with others at work to come up with new designs. I always see people support ideas only to jump board once they here the details of how it will be executed.
My point is everyone wants change when they don't think things are going their way and all you have to do is give a different idea. I even go back and question my decisions on things only to remember why I choose to do it that way once I went back through the details.
So, if Obama can dodge the details he can keep on preaching change, change, and more change. And Obama if you get cornered on an issue you're best at being as vague as possible.