While reading The Hitchhiker’s Guide to the Galaxy on a Kindle, Reddit user Sageas spotted an eReader prophecy in Douglas Adams’ classic book.

Here’s the passage: “He also had a device that looked rather like a largish electronic calculator. This had about a hundred tiny flat press buttons and a screen about four inches square on which any one of a million ‘pages’ could be summoned at a moment’s notice. It looked insanely complicated…”

They posted a picture the passage on a Kindle screen–an eReading juxtaposition that generated hundreds of comments, arguments and tributes to digital books on Reddit. Before you ever saw an eReader, how did you imagine digital books?