Distractibility isn't a human problem; it's a design problem, writes usability expert Don Norman. We need to reverse the normal technological strategy of asking people to fill in for gaps in machine performance. Instead, we should require machines to fill in for gaps in human performance. After all, technology was invented to enhance people's lives, not the other way around. Let's build technologies that empower us, allow us to use our creative abilities, and relieve us of the stuff we are not good at.