Before revision: Douglas Adams Douglas Adams's 1982 novel Life, the Universe and Everything (in The Hitchhiker's Guide to the Galaxy comedy science fiction series) introduces the idea of an "SEP field" as a kind of cloaking device.
After revision: ' SEPDouglas Adams Douglas Adams's 1982 novel Life, the Universe and Everything (in The Hitchhiker's Guide to the Galaxy comedy science fiction series) introduces the idea of an "SEP field" as a kind of cloaking device.