Quote:Clary: Obviously JTT couldn't care more.
I could care less, because it seems as if a completely cockeyed phrase is gaining ground because nobody is thinking what it means. Lord Ellpus has summed it up in exemplary fashion, as is his wont (and that isn't won't).
It's precisely because I do care, Clary that I don't allow these language bigots to spread falsehoods about how language works. Bigotry normally thrives where ignorance lives. Once you've heard the truth, you can, of course, choose to remain ignorant, if that is your wont.
CGEL: For many American speakers the expression "I couldn't care less" has lost its negation and the expression is now "I could care less", still with the idiomatic meaning "I do not care at all". For these speakers, "care less" is no longer an NPI {negatively-oriented polarity-sensitive item]; "could care less" has become an idiom with a negative meaning (approximately the opposite of its literal meaning)
This is not an uncommon development; it is seen again in the development from "I don't know beans about it" --> "I don't know anything about it" to "I know beans about it" with the same meaning.