A post from Carol Iannone on National Review:
"I'm not a fan of Ayn Rand's writings or ideas but she has a long section in one of her novels about a train wreck which kills many people that seems apropos today. Everyone says of the train wreck that nothing could have been done to prevent it, but she goes over the whole buildup to the accident, every little piece in the chain, and shows how human choice, action, and decision-making accumulated step-by-step until culminating in the horror. That's how the Virginia Tech Massacre appears to me. No one thing might have prevented it, but it was caused, or permitted to happen, by a long accumulation of faulty actions and perceptions, of denials and mistakes, of bad decisions and assorted other failures. The only thing is to try to learn from it all. "