UFOs

I would like to say I’ve seen them, but I haven’t. I believe others who are less crazy than I am. The UFOs levitate; they move swiftly; they change directions as though they were weightless. They scorch the grass where they land, but in their flight we see no visible trail or smoke. They have changed appearance over time, around the world, but tend to be seen where they’ve recently been. In summary, they defy scientific explanation, but denying that they exist doesn’t convince anyone.