I know the correctness and origin of various carrot-and-stick expressions was repeatedly hashed out in AUE years ago. I don't mean to resurrect that argument. What I'm interested in is the change in common usage that I've observed since then.
With all due respect to Truly Donovan and the intelligence of donkeys, TR and Churchill notwithstanding, until recent years I almost always heard "carrot and stick" used to mean an ever-receding incentive (carrot *on* a stick). The clever farmer hanging a carrot from a stick tied to the donkey's head is a joke everyone's known for a century or more, the central metaphor of probably hundreds of cartoons over that time, and to ignore it always seemed as odd and naive to me as, say, talking unironically about "a modest proposal."
Now, though, you can hardly go a day without hearng some reporter or government official or middle manager talk about carrots and sticks as alternatives of proffered reward and punishment (carrot *or* stick). So who was it that missed the joke? Was there some watershed use a couple years ago that brought this recent flood of unattached carrots and sticks into common parlance? Did it come, as one response to this blog entry suggests, straight out of the mouths of the Bush administration?
http://portipont.blogspot.com/2005/11/carrot-and-stick.html¬R