One of the most confoundingly difficult challenges we all face as trusts and estates attorneys is what to do if a client’s cognitively declining or otherwise impaired in a way that is clearly affecting his or her decision making. The two most common scenarios for how this dilemma plays out in real life are: (i) elderly estate planning clients slowly sliding into dementia, and (ii) cognitively impaired adults in contested guardianship proceedings. The core question…