Raven H. v. Gamette

In Raven H. v. Gamette (2007) 157 Cal.App.4th 1017, the court held "'"A plaintiff is not required to eliminate entirely all possibility that the defendant's conduct was not a cause. It is enough that he introduces evidence from which reasonable persons may conclude that it is more probable that the event was caused by the defendant than that it was not. The fact of causation is incapable of mathematical proof, since no person can say with absolute certainty what would have occurred if the defendant had acted otherwise."'" If the evidence presented on causation leaves the matter "'"one of pure speculation or conjecture, or the probabilities are at best evenly balanced, it becomes the duty of the court to direct a verdict for the defendant."'" (Id. at p. 1030.)