Punctum Saliens

Why is that we can have super-colliders exploring alternate universes, magnetically levitating trains, probes mapping every square kilometer of our neighboring planets, earthquake-resistant skyscrapers, animated movies that put millions of individual hairs on monsters, and those can openers that cut around the sides of a can but we can’t get a damn windshield wiper that actually wipes the snow off a windshield without my having to get out of the car three times and bang on it?