I think making a reasonable effort to cover likely scenarios is a good way to communicate your intent, and if a situation comes that you didn't cover, a trustwo

I think making a reasonable effort to cover likely scenarios is a good way to communicate your intent, and if a situation comes that you didn't cover, a trustworthy reader has a good chance of taking the action you would have wanted. At some point you have to accept that you're going to have diminishing control over things.