Actually, I quite like your comparison since I've been thinking along the same lines myself. With that said, though, this analogy is not always applicable to real life cases. For example, working smart may mean dumping your nasty work for as nasty a boss and switching to something which is more rewarding in all or many aspects (financially, intellectually, spiritually, whatever). Obviously, the latter case doesn't fit your definition very well because it is essentially outside its scope. Strictly speaking, that wouldn't even count as working smart, but we all think of this as a wise decision anyway (provided you succeed with your effort, of course).