Re-doing one from earlier that I had to delete because hosting the images on Flickr was distorting everything when viewed on a phone or tablet. Got it sorted out now, and added an extra expository panel.
First new one in a loooong time. Made it extry long to atone for it. This is my present for the real-life “Johnny Onassis” who was our most gracious host in Cambridge this past spring, and I got the idea for this one in his apartment when we were having (of course) Champagne.