But why, oh why are three last posters right?
It seems that Darwinian evolution stopped with modern societies
I see a lot of people that have no common sense, but that are not inherently stupid, and can be taught to (re)gain it. I personally believe that it requires exercise and dies when not regularly used - And it it is not when watching American Idol or whatever?
I do agree that navigation is easy, but also something that you get better at when actively using it...