What a fantastic talk! Witty, well-paced and truly insightful. "Operator error is a symptom, not a cause." Ms. Leveson's book "Engineering a Safer World" has

What a fantastic talk! Witty, well-paced and truly insightful. "Operator error is a symptom, not a cause." Ms. Leveson's book "Engineering a Safer World" has a free PDF download at http://sunnyday.mit.edu/safer-world.pdf http://sunnyday.mit.edu/safer-world.pdf