Acknowledgments

As always, I could spend more pages thanking people than are in the work itself. Here are a few who stand out:

Cliff C. for getting me on board (and always letting me know the weather). Robyn T. for her diligence in keeping us all on time, and deleting all of my superfluous words. Scout F. for her tolerance of my grammar. Matthew B. for helping out while taking care of his new baby boy. Vijay P. for coming in under a tight deadline and working till the end. The mobile team at Tumblr for their encouragement (cleverly disguised as snark). The Android team at Google for building great new tools and making every release feel like a birthday. Most of all, Peachpit for giving me the opportunity to write for you.