When it came to it, Richard Dawkins did not face up to the challenge even when invited to do so by the BBC. On offer was £20,000 to him if he could explain how the Shroud image was formed. That offer remains open. All I ask is to be able to film his attempt. What is he afraid of? Or is he simply contemptuous of those who are prepared to look a little deeper. Possibly, now, he may be a little perturbed by the recent discoveries of new discoveries in physics that have thrown his firmly held certainties up in the air.