What a waste of paper and time. Our “expert” admits he has only been using fidget spinners since March 2017, and we now have a full book, with pictures and all in September. The main question my brain asks is WHY DO WE NEED THIS? Seriously, why is this book needed. Spinners will be a fad and the authors even explain that very little is known about the need for these devices, and if they actually do the good they claim. For most these sometime cheap and sometimes expensive devices will be just more stuff accumulating at the bottom of the junk drawer. The one thing that saves this book is that they explain how they work and how they are made.