If you do I would say it's been nice knowing you.
Can someone else ask the next question?
Yes, but don't think that things are as they always appear. For instance, "can you please pass the salt?" is uttered in the form of a question, but seriously, is the person really and truly asking a question concerning the abilities of the person that such an utterance is directed at? In some rare instances, perhaps, but in the typical situation, it's a directive (like an order or command) but masked with pleasantry.
Speaking of "can", there is a distinction that can be contrasted by differentiating the opposites of "cannot" and "can not." I cannot fly like a bird expresses an inability while I can walk like a normal person expresses an ability, so on the one hand, there is the "can" of ability. I can stop for the blue light or I can not stop for the blue light, and as life has it, there will be consequences for the choices I make, so there is the "can" of choice.
You can run, or you can not run, but false is he that says you cannot run.
Next question: differentiate a couple differences of "may." Oh, is that not a question? Sure about that? Why, because it wasn't formed differently? Tsk tsk.