Some pressing personal context: I live in a very small flat with huge windows and curtains that only ever seem to cover about 80% of the view, no matter how ingeniously I yank them around. Every laundry day, I have to decide between letting the sunlight in, and hiding my drying underpants from the eyes of the commuters walking to the bus stop. But it could be worse. I could be living opposite the protagonist of The Watcher, an Unreal…