For every cause, there exists some possible circumstance such that one or more individuals having a miscalculation would benefit that cause.

Proof: Take desired result R. Assume there exists some person P who is opposed to R. Let there be some action that P can take such that R becomes impossible. If there are no downsides to this action, then R will only occur if P makes a miscalculation. ⬜

Thus, if your maxim holds, then there is no such thing as a good cause.

A discriminant that labels all causes as "bad" is not useful.

Therefore, your maxim does not serve as a useful discriminant.

QED