On a bike trip a while ago I came across a little lake. It was fascinating, the water was perfectly calm. The lake was surrounded by trees which effectively shielded it from any wind. You could not see any movement on the surface.
What fascinated me from a photographic point of view was the reflection on the water. It was like I was looking right into a mirror. Even more, the image in the water seemed much clearer than the bright sky on this summer day.
What I did afterwards was turning the image upside down, leaving the viewer (hopefully at least for a moment) puzzled what’s the reflection and what’s not.