I open my eyes and I have an experience that I describe as a red tomato a meter away. As a result, I come to believe that in reality, there's a red tomato a meter away. I then close my eyes, and my experience changes to a grey field, but is it still the case that in reality, there's a red tomato a meter away? I think so, but could I be wrong? Could I be misinterpreting the nature of my perceptions? (David Hoffman)

Do we experience the real world, and could the content of perceptual experiences ever be misinterpreted? The filmmaker mistook a broken glass bottle for a log over a period of several weeks. Realising the interpretational error of her brain, she became aware that reality had been falsely depicted. It showed that perceptions may not be directly related to objects in the real world - whereas vision seems real, this may simply be a human illusion.