Historically, the authority granted to an Agent in a POA automatically terminated upon the death or incapacity of the Principal. The problem with that was that the possibility of becoming incapacitated has always been a common motivation for executing a POA in the first place. If your goal is to ensure that the person you name as your Agent has the authority to act on your behalf if you suffer a period of incapacity, but that authority automatically terminates when you become incapacitated, there’s a problem. To resolve that problem, the concept of a “durable” POA evolved. When a POA is made durable it simply means that the Agent’s authority survives the incapacity of the Principal.