Paul was shot and killed by an unknown assailant as he was coming out of the front door of a night club late one night. Paul’s wife sued the nightclub in negligence. She claimed that the nightclub was negligent in failing to provide uniformed guards outside the front door. Assuming that this failure was negligent, does this prove causation between the negligent act and Paul’s murder? Do you think that Paul’s wife will win her case? Explain.