“I hope not. But explain. You speak in volumes. Come back to earth.”
“That's easy, Harry. I can give you my theory in a few short words.
You've studied physiology, haven't you? Well, that's where you can get
your proof--or rather let me say my theory. What is the Blind Spot?”
“In optics?”
“We'll forgo that,” he answered. “I refer to this one.”