Re: Instructor got mad because I didnt fall
My favorite kind of uke is a new student who has experience in other martial arts. They have yet to train their instincts to their newly adopted style, but they can take a fall and tell the difference between convincing and unconvincing techniques. If they smile when you slam them, they'll make a fine future uke indeed!
Personally, I rarely block anyone's technique, preferring to skip right to the communication part. It keeps things nice and safe. Sort of a "that was good but this could be better" approach rather than a "absolutely not, do this" approach.