Last November I published a “children’s book for all ages” called Game in the Garden. It’s about evolutionary game theory.

In choosing this style, which was very different from the dense 486 pages of my first book, my hope was to convey certain ideas and lessons in a way which could be universally appreciated. In that sense, I want the book to stand on its own and have something to offer to readers—whether they are 5 years old or 50.

However, I’m not going to make you do all the heavy lifting by ...