Is a factfinder entitled to disregard an expert's opinion?

Kennemur v. State of California (1982) 133 Cal.App.3d 907, 923.) A factfinder may disregard the expert's opinion, even if uncontradicted, and draw its own factual inferences. The court is entitled to accept all or part of a witness's testimony, reject an uncontradicted expert opinion, and draw its own reasonable inferences from the evidence. We do not reweigh the evidence nor do we substitute our own reasonable inferences for those drawn by the trier of fact.