In reading the accounts of how the plane crash that killed the Polish President and over 90 other souls, I found it morbidly fascinating how the pilot could apparently receive an indication from the ground that a landing was unsafe but waive off that information the way a pitcher can waive off a catcher's pitch suggestion.

I'm not suggesting train crews always act safely or always follow directions-but there is a structure designed to assure individual judgment is guided and restrained by safety.