If you were suddenly alone, could you wake up in the morning, operate effectively throughout the day as you performed the activities of daily living, retire self-assured at night, and repeat that process in the weeks, months, and years to come? Could you today, without help from anyone, put your hands on all your financial records, legal documents, personal identification cards, insurance policies, medical records, prescriptions, computer logins and passwords? Have you thought about what you will do or where you will live if you become incapacitated? Have you told anyone your wishes upon...