Nudging seems to be about little steps (mouse wisdom) and thinking small … down to the easiest effective step towards solving that problem. The more convinced one is the problem can’t be solved … the better.
Usage note # 1: Liberal applications of persistence Help.
Yes, that’s all well and good, but what if one really believes it can’t be solved?
Usage note #2: Keep mental space open for a solution to arise, yet. An open mind sees more than one that set at “No Solution Ever”(but good surprises when one is expecting none are kinda nice also!)