This document discusses the history and rules of change ringing, a method of ringing church bells in ordered sequences. It covers how change ringing originated in 17th century England using specific techniques and vocabulary. The rules dictate that each bell must move only one position between rows and no permutation can be repeated until the final row, which repeats the starting pattern. The document also notes how change ringing is connected to mathematical concepts like permutations and group theory. It concludes by listing some thinking tools that creative people use as discussed in the book "Sparks of Genius."