1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works.

1. Anything that’s invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it.

1. Anything invented after you’re thirty-five is against the natural order of things

~ The Salmon of Doubt: Hitchhiking the Galaxy One Last Time by Douglas Adams

1. From the book’s Wikipedia page, “The Salmon of Doubt: Hitchhiking the Galaxy One Last Time is a posthumous collection of previously published and unpublished material by Douglas Adams. It consists largely of essays about technology and life experiences, but its major selling point is the inclusion of the incomplete novel on which Adams was working at the time of his death, The Salmon of Doubt (from which the collection gets its title, a reference to the Irish myth of the Salmon of Knowledge).”