I have considered it important to include a brief introduction to numerical notation, to help contextualize what I mean by “large numbers”, and to provide a very short overview of the fascinating world of probabilities.
In addressing the first major question of this book, I found myself needing to reference extremely large numbers. However, I realize that not everyone finds it easy to grasp just how big a big number really is—or, conversely, how small a very small number can be.
Clarifying this distinction is the purpose of this appendix.