Have you noticed the night-time walls? Shiny, with the inside appearing outside, but in the day you only see the outside outside. And if you don't put a covering over the wall, they tell me, at night, the outsider can see inside. They warned me when I went to sleep and started to remove this pesky outer skin.
I've walked past a few Salford Earthling homes with the shiny wall uncovered. Very useful information. I wish they all wouldn't cover their walls. So much to see.