I have a really hard time with 'can' vs. 'can't'.
For example: when I hurt my wrist. Could I do xyz?? Well I could- but would hurt a lot. Then I get yelled at for saying I could do something when I couldn't... Shouldn't there be a qualifier there? "Can you do this with out pain?"
Another one, can you drive to my parents house for lunch? Technically, yes I could. It is not reasonable, but it could be done. Sooooo what is the answer? Am I supposed to say, "Yes, I could- but I would have to leave very early"
I can never tell! What do you do?