To add an AC outlet, for example, you just drill a circular hole in the wall, tap into the wiring, add the outlet and you're set. If you don't want it, pull it out and plaster over it with more earth to seal the hole.
“You know, people always talk about how Jesus came down to Earth as a human being. He became a human being, But no one ever takes into account what that means.”
“I also read modern novels - I have just had to read 60 as I am one of the judges for the Orange Fiction Prize.”