The first post I quoted said "what physical advantage is that", as if they don't exist, and he specifically referenced GP racing. The second post I quoted was replying to another post that had just addressed, with specificity, how the physiological advantages would affect GP racing. In the quote he says that it is "pure opinion masquerading as fact", referring to the physiological advantages. Then I responded with what you quoted me saying, referring to the physiological differences and how they relate to all physical exertion, which includes GP racing. I know exactly what i said, in wahat co text, and what iwas addressing. Its you that doesn't. Good, it'll benefit you.