The Null Device
A nursing home in Düsseldolf has come up with a novel way of dealing with stray Alzheimer's patients; they set up a fake bus stop outside the home:
“It sounds funny,” said Old Lions Chairman Franz-Josef Goebel, “but it helps. Our members are 84 years-old on average. Their short-term memory hardly works at all, but the long-term memory is still active. They know the green and yellow bus sign and remember that waiting there means they will go home.” The result is that errant patients now wait for their trip home at the bus stop, before quickly forgetting why they were there in the first place.
(via Boing Boing)