Across aging societies, a gap is widening: People live longer, but families grow smaller. A rising number could reach the end of life, unable to make their own medical decisions and with no next of kin or trusted friend to speak for them. Life-or-death decisions then lie in the hands of a stranger.Across aging societies, a gap is widening: People live longer, but families grow smaller. A rising number could reach the end of life, unable to make their own medical decisions and with no next of kin or trusted friend to speak for them. Life-or-death decisions then lie in the hands of a stranger.Machine learning & AI[#item_full_content]