I think the temple, the temples is the first region of your hair that goes grey. And it was supposed to... It's the first one that I can see. So let's talk about these five lobes. Now maybe let's do a bit of anatomy so people can sort of understand where these lobes are. We spoke about the longitudinal fissure separating the left and right hemispheres. But going from left ear to right ear, you've actually got something called the central sulcus. Separating out the frontal lobe from the temporal lobe is a fissure called the Sylvanian fissure. You've got these grooves or divots or valleys that will