Take a look at this header and sub-head from a Jacob Weisberg piece.

Obama Outfoxes Romney
The president’s agility on gay marriage and immigration is making his rival look stodgy and unprincipled.

What’s the problem, you say?

The President’s agility — his evolution, his changing his damn mind on something after getting pressured on it — makes Romney look “unprincipled.”

You keep using that word, Jacob. I do not think it means what you think it means.