This book is what finally made me decide that programming ActionScript as a money earning job was not for me.
I loved the simplicity of the book. And I don't think anything will stop me from tinkering around every once in a while.
But at the same time reading this made me realize that the speed at which these technologies are developing is enough to swirl my head right off, and if I want to keep up I have to constantly spin my whole torso along with it.
Frankly I've got better things to be doing now than jumping on the next iOS, Facebook game, etc... bandwagon.
So, if this book has taught me one thing, it's that I should be wasting my time on reading and writing, and not on technical mumbo-jumbo that will only be replaced be seemingly easier techno mumbo-jumbo sometime next month.