Is there a good explanation of the expression "can't even", as in "He can't even spell the name of the chemical, much less synthesize it"? How did that use of the word "even" originate?
It's common (in the USA) to hear people say things like "I used to jog every day" or even "I use to jog every day", meaning "I once jogged every day". Also people say things like "I am used to drinking coffee every morning", meaning "I am accustomed to drinking coffee every morning". Did the use of "used to" originate in any way that is connected with less idiomatic usages of the phrase? - such as "A hammer is used to drive nails".