Power of Negative Thinking

We cannot make it over this bridge without being killed. He was firm in his belief. We tried to quell his negative thoughts, but we could not.. Why do you think that? The llamas are too heavy! But we have crossed it hundreds of times. Yes, and you have weakened it! We saw his anguish, and realized we could not stop it. So we insisted on being the first two across the bridge with our llamas. His llama made it too, but he must have weakened it. Because the man who did not believe fell to his death when he tried to cross the bridge. The power of negative thinking.