My confidence in this book is diminishing. FIRE Your Proofreader!
On page 63 in the grey shaded box that shows the results for garbagePiece. It should say "Put in blue box" but it says "Put in blue bin". This is minor, but this is a reference book and I'm constantly finding errors.
Sorry guys. Overall I think the communiction style is good, but it's hard enough stuff to digest without having to labor over mistakes.