Backstory: I’d forgotten about this one—how fun! I think the idea for this Nudge may have come to me when I checked out a new-to-me bookstore several months ago, when I ended up in a new-to-me neighborhood. Even though I live in a smallish city (San Francisco is roughly 47 square miles; for comparison, Los Angeles is 302 square miles), there is so much here I have yet to explore. Weather permitting, here is my chance to do just that.