
This week a man stood in our store holding a lenticular dog cup, one of a set of four, each printed with a different dog. He was a well dressed man, and he held the cup from many different angles, scrutinizing it closely. He put it down and picked it up again. he rotated it in his hand. He held it closer, staring at it. At least ten minutes passed. Now, there was nothing particularly strange about this cup to the casual observer. Anyone who saw this man inspecting a plastic puppy cup at such length might have thought - that guy must be a little crazy! And I know if I saw a person staring at anything that intensely for that long, I would be wondering about them myself. But I was not alarmed because I knew this customer. He is a regular shopper and a theoretical physicist. When he stares at something for that long there is always a reason. And this time it turned out that he had never seen a lenticular image on a curved surface. He was trying to figure it out, and how it could be done just a little bit better. Another customer got involved in the discussion. This sort of thing is one of the things I love about standing behind the Joie de Vivre desk!