I'm trying to track down a short scifi story I once read. It was about an alien probe scanning the world and accidently erasing 2 days of everyone's memory. So when everyone wakes up on Monday, they're surprised to find that it's actually wedenesday. Each morning everyone has to re-learn current events to get up to speed. Slowly the world has to rely on retirees as the younger generation forget everything and revert to a younger age.
Any ideas ?