This is a great link, really great, and yet I fear it's inadequate to the task of explaining the situation to a nonphysicist. [1] It makes use of both (a) bras

This is a great link, really great, and yet I fear it's inadequate to the task of explaining the situation to a nonphysicist. [1] It makes use of both (a) bras and kets and (b) a Zen koan. At this point we have abundant experimental evidence that these things don't help most people. --- [1] Not that there aren't plenty of physicists who need help, too.