When bunny_hugger bought the house we live in, fifteen years ago, they warned her the roof would need replacement. With one thing and another we didn't get around to it until, well, this year. Other stuff was just higher-priority, including messing up all of summer 2012 by getting married, and the house-painting in summer 2013. We finally got to taking estimates and hiring a company to do it.
None too soon, either. We didn't realize, because it was on the side of the house that's obscured by the neighbors (it's a two-storey house; the one on the other side is a single storey) and in the direction we have less cause to go, but the shingles were in terrible shape. I referred to them as looking like an angry sea: some were flipped up and sliding down and shuffled around and they really looked like that ancient MGM cartoon where Barney Bear is re-shingling his house and a storm kicks up and the roof turns into an angry wave. I sent my father a photo of it and --- after the new roof was put on --- he admitted he was horrified by how that looked. Mercifully we hadn't seen that corner until the day before the roofers came so we didn't have to worry about it.
They got started pretty near first thing in the morning, for obvious reasons, and the mysterious disappearances of our neighbors served us very well. The roofers had to tear all the old shingles off and throw them to the ground, after all, and there's not really any room between our house and the neighbors' driveways, so their not being anywhere we could tell meant that the only inconvenience came to our pet rabbit, who thumped --- once --- at all the racket and then was content that his protest of all these goings-on had been heard.
Trivia: Late 1973 research indicated that to ferry itself, the Space Shuttle orbiters would require at least five ferry engines (a DC-9, about the same size, required two) and could not have a range of more than five hundred miles. Source: Development of the Space Shuttle, 1972 - 1981, T A Heppenheimer.
Currently Reading: Gray Matters, William Hjortsberg. It is actually rather effective and creepy. The back cover says ``First there was BRAVE NEW WORLD Then `2001' And Now, the mind-blowing novel that reaches into the near future'', though the main action is set several centuries hence; the front cover says it's in the manner of `The Andromeda Strain' and something covered by a price sticker. Go ahead and triangulate that book.
PS: Combining Matrices And Model Universes, getting back to the curious physics of my toy universe.