See James Fallows's post Once and for all with the frogs http://jamesfallows.theatlantic.com/archives/2009/09/once_and_for_all_with_the_frog.php http://jamesfa

See James Fallows's post Once and for all with the frogs http://jamesfallows.theatlantic.com/archives/2009/09/once_and_for_all_with_the_frog.php http://jamesfallows.theatlantic.com/archives/2009/09/once_an... for a great kitty litter box analogy...