We pulled into Wolverhampton station and I looked across, thinking I was seeing a reflection of my train in the window of the Pumpkin cafe.

That is until the reflection started moving. My train was stood still. I was looking through a window at another train platform. Things are not always what they appear to be.

It took me straight back to the Roppingi Hills complex in Tokyo, where we saw an exhibition by Leandro Erlich: “Seeing and Believing”. He took us through a series of set pieces designed to test our assumptions.

My favourite piece was the mock hairdressers’ salon. The mirrors on one side of the room worked perfectly – showing my reflection. The mirrors on the other side were broken. No, broken is the wrong word — they just didn’t work properly. They reflected the room but not the people in it, as if we were vampires. In fact there was a completely different group of people in those mirrors. It took me a little while to figure out what was going on.

I was looking through a window at another salon.