Thank you to the members of the Racket community who have been kind and helpful over the years.
Thank you to Danny Yoo for making his bf tutorial Fudging Up a Racket, and his ragg parser generator, available under an open license so they could be adapted for this book.
Thank you to Eric Wastl for letting me adapt his Some Assembly Required puzzle as the wires tutorial.
Thank you to Atticus Bones for letting me adapt some of his algorithmic design concepts for the cover illustration.
Thank you to the many readers who have sent in comments and corrections during this book’s development.