I think you only rely upon substantial factor when each D isn't a clear but-for cause, e.g. two fires combining. From that fact pattern, it sounds like each is just a but-for cause, making them all jointly and severally liable, unless you can get them off on proximate cause.If dr. had warned, decedent wouldn't have swam.If lifeguard had been present, decedent wouldn't have drowned (lack of lifeguard substantially increases rsik of drowning, thus it can be viewed as a but-for cause)If friend had stopped him, decedent wouldn't have drowned.Of course, each of the above have counter arguments, like did friend or dr. have a duty to warn him? Did the pool owner have a duty to have a lifeguard present? Would decedent have listened to friend or dr if warned? Please, someone correct me if any of this sounds wrong.
Quote from: conrad42 on November 27, 2007, 01:11:23 PMI think you only rely upon substantial factor when each D isn't a clear but-for cause, e.g. two fires combining. From that fact pattern, it sounds like each is just a but-for cause, making them all jointly and severally liable, unless you can get them off on proximate cause.If dr. had warned, decedent wouldn't have swam.If lifeguard had been present, decedent wouldn't have drowned (lack of lifeguard substantially increases rsik of drowning, thus it can be viewed as a but-for cause)If friend had stopped him, decedent wouldn't have drowned.Of course, each of the above have counter arguments, like did friend or dr. have a duty to warn him? Did the pool owner have a duty to have a lifeguard present? Would decedent have listened to friend or dr if warned? Please, someone correct me if any of this sounds wrong.all 3 of the defendant's conduct were but-for causes of the plaintiff's injury. The next step is determining whether any of the defendant's conduct was a proximate cause of the plaintiff's injury. The substantial factor test is simply one way of determining proximate cause. The substantial factor test has nothing to do with whether the conduct was a but-for cause.
I think the analysis of the hypo forgets to start by analyzing if there was a breach of a duty. Looking to proximate cause first can be like putting the cart before the horse, and can just leave you ending up confused.The closest analogy to that hypothetical is Palsgraf, where the (possible) tort to one person could not form the basis for a finding of a breach of duty to third person. So, a restaurant serving Patron A bad food is not a breach of its duty to Patron Z (unless A and Z are married (or parent and child, etc.) and Z sues to get loss of consortium). However, the possible exception would be if it was foreseeable that the tort to the one person would harm others. You could argue that the restaurant should have foreseen that the sick patron would throw up and cause the premises to become unsafe. (Of course, it would have to be a tortious act, and serving bad food is not always a tort).The hypo could end up with the restaurant liable for the slip-and-fall damages, though, even without finding that it was foreseeable that the person would create a dangerous condition by throwing up. People/businesses owe a duty to invitees (which the patron would be), and part of that duty is to keep the premises safe. If the restaurant had actual or constructive notice of the dangerous condition on the floor (the vomit), then there would be a breach of that duty, and that breach could easily be the proximate cause of the injuries.That sound right?"The above is the most correct response. There are 2 types of causation u need to prove. Factual (but-for) and Proximate (substantial factor test). Also, look at superceding causes - whether a specific defendant's action relieves another defendant from liability (I think it's easier to use a foreseeability test in place of substantial factor). For example, if you eat at a restaurant and get sick and throw up and patron slips on your vomit can patron sue the restaurant for serving you bad food? Serving bad food is a factual cause (but-for) but probably not proximate cause (substantial factor) in patron slipping and falling (we learned foreseeable harm/victim test which might be easier to apply). The superceding cause is you vomiting all over the floor. Restaurant serving bad food seems a bit removed from patron's slipping and falling... not a substantial factor to injury suffered."
Hmm.. I was under the impression that you use Substantial Factor to determine factual causation. I'm pretty sure it is used as a test when But-For doesn't work. For instance, in a multiple-sufficient cause scenario (two fires burning the woods) but-for won't work because even if one fire had not occurred, the other one would have done the same amount of damage. As such, you would use substantial factor in order to show 'factual' causation. I haven't ever seen substantial factor discussed in relation to proximate cause.... proximate cause is more of a matter of public policy/duty than it is about actual causation. Even with the intervening superseding causes, the idea isn't to determine whether the intervening actors are substantial factors, but rather if their actions were so unforeseeable/extraordinary that liability should be cut off. I haven't seen substantial