Dawdy Haus (grandpa house) — small house next to the main one. When son marries and takes the farm, parents move to Dawdy Haus. Close (30 meters). Independent (own kitchen). But: grandchildren run in. Lunch — together. Help — anytime. Nursing home cost: $5,000-8,000/month. Dawdy Haus: $0 (already built). Who lives longer?