“Let’s go to the beach! The beach! The beach!” my son kept saying. “That’s not gonna happen, buddy,” I told him. “We’re in Indiana.” To my surprise, we saw a sign for the Indiana Dunes National Park, with a large lake and a beach (please forgive my ignorance of geography). That’s where the same son, who can’t swim, stepped into water that immediately covered his head. I panicked mildly, then lifted him out of the water to safety.