Humanity never seems to learn. During the 20th century, at least 108 million people were killed during all wars combined, and you would think that after so much bloodshed humanity would never want to go down that road again. And in this century, an enormous amount of American blood has already been shed in Afghanistan, Iraq and elsewhere. Unfortunately, the drumbeats of war are starting to get louder once again. Very angry talk often precedes military conflict, and right now there sure is a lot of angry talk going on.