A common complaint among photographers is that the photograph just didn't happen. If only they had had this or that, or this had happened or that, they would have gotten a great picture. The picture they wanted just wasn't there.
News photographers know one must shoot what is there and not worry about what isn't. News shooters know that photographers make pictures.
In the summer this is a merry-go-round and it makes an easy picture. Colourful carousel horses and sometimes laughing children, you can't go wrong. But horses or no horses, I needed a picture and I got one. It was posted on London Daily Photo and it got some good comments.