My favorite thing about Columbus is the RiverWalk–22 miles for walking and biking along the Chattahoochee River. Today Cal and I walked a loop–north along the Georgia side, across a bridge, south on the Alabama side, across another bridge and back. A little over an hour and then lunch outside downtown. I wanted to go, but I’d gotten up late and wasn’t yet ready to leave my study. It took me a while to get in the spirit of things.