55 Plaque by Isabel Lee : Clarkesworld Magazine - Science Fiction & Fantasy
Science Fiction & Fantasy There aren’t actually fifty-five plaques. I’ve found this to be a pretty common misconception in children, especially when parents neglect to talk about it at home. That’s why it’s one of the first points I go over when we begin our unit on the Didacts. There are only nine plaques that have arrived on Earth so far; 55 comes from the number of years between the ninth plaque and this coming tenth one, a number that follows a very special pattern called the Fibonacci sequence. Fibonacci, I say again slowly, spelling it out in big letters on the whiteboard.
Source: clarkesworldmagazine.com