I was out back in the garden earlier, just before sunset. The three-quarter moon was bright yellow in the clear blue sky, and as I drew on my cigarette, something struck me as odd. I mentally drew a perpendicular line from the shadow on the moon and tried to trace it over the shed, skimming the apple trees, over the hydrangea, to the sun. But it didn't seem to point at the sun. It looked as if it was maybe ten degrees out. Huh? I said to myself, and got my rake. I held it up as best I could between the moon and the still-bright sun. That shadow on the moon still looked wrong. So, guys. Was I kidding myself? Is there something odd about arcs and great circles and horizons that deceives the human eye? Do I just need a pair of sunglasses and a longer rake? Or (ho ho!) do I get a Nobel Prize? Your information will be gratefully received.