 I think everyone's confused. An article in the New York Times says, consumers are confused what to do to support their joints. So people are looking for alternatives. We need cushioning in between the joints, the bones in our joints. When a doctor looks at an x-ray, all he's doing is measuring the space between the two bones there in the knee. So it's about a quarter of an inch space. Without that cushioning, you've got bone rubbing on bone.