As I have stated before, from my experiences with how some "DJ" hook up their stuff, I have to ask questions and also define. I do not assume anything. In most DJ applications inputs come in Pairs. Live sound inputs are "usually" Mono.I guess what that means, is you endeavor to look into what someone is trying to say/ask, as opposed to trying to interpret their words literally...
Dealing with other humans, is a combination of science and art. Most of the art, involves understanding the way people communicate.
If you go strictly by the words, you may lose the intent.
Capiche...?