First of all, it's what he said. We report what he said, not whether we feel it works. Second, he said it because, as he made clear, both PVS and MCS are clinical diagnoses, whose pathological basis has not been agreed, so his findings cannot be taken to support either. Ronabop is spot on, I think. He's not saying knowing knows where the line is. He's saying no one has established there is a line.