Notes from reading Walkable City: How Downtown Can Save America, One Step at a Time by Jeff Speck.Core argument: A walkable city is not just a nice, idealistic notion. Rather, it is a simple, practical-minded solution to a host of complex problems that we face as a society, problems that daily undermine our nation’s economic competitiveness, public welfare, and environmental sustainability.The American health care crisis is at its heart an urb...