Plaintiff’s Half-Baked Attempt to Prove Defect and Causation With Photographs of Moldy Bread Shows the Knead for Expert Testimony

A picture may be worth a thousand words, but that doesn’t make the camera an expert witness. Product liability actions usually require expert testimony to prove defect and causation. Pictures, like other documents, can be central to an expert’s opinion on those points. But as a plaintiff in the Eastern District of Pennsylvania recently learned, pictures alone are insufficient. Defect and causation still require an expert’s testimony — even in cases involving products as simple as a loaf of bread.