Unknowing: Dementia and the end of knowing

George and Peg have shared sixty wonderful years together, looking forward to many more. But their luck starts to falter.

At first, it's just small things: Peg misplaces items, grows anxious when George drives, while George struggles with sleep, balance, and a trembling hand. Peg notices him occasionally staring blankly, disconnected from their world. One moment, he's the same sharp and loving George; the next, he seems lost.

When Peg finally decides to stop him from driving, George is furiou...