As far as I’m concerned, the best innovation of the last ten years isn’t Google Home, the Las Vegas Golden Knights, or self-driving cars—it’s the Little Free Library. Thanks to this grassroots movement, anyone can put up a cute little box in their yard with books inside, and other people can come and get them FOR FREE, or drop off their own books TO SHARE. So you can be out on a walk, minding your own business, and suddenly [cue angels singing, floods of golden light slanting