I’m working late in a computer room on the tenth floor of a tower block. There is a power cut my computer screen goes blank. I’m under the desk and begin fiddling with the cables when I hear a noise in the corridor outside. I open the office door to see that some patio doors have been left opened, I wonder to myself why anyone would put patio doors on the tenth floor. I see a light switch and automatically think of doing the test that tells me if I’m dreaming or not. I flick... more