Justice Posner used the doctrine of res ipsa loquitor theory of liability to find the defendant
liable. This doctrine means that if something isn’t likely to occur unless the defendant is
negligent, it proves that the defendant is negligent. The accident was caused when the jar was
opened not caused by a defect or it would have broken before the incident. The judge did not
think that the normal force of opening a jar or taking off the label with a knife would be enough
to shatter the product. Justice Posner reversed the decision because it was more probable that
there was a defect or damage before the peanuts were purchased. I agree with his decision, I
believe that the jar was damaged beforehand and it is his duty to hold the company liable for the
damages.
