"Do you know about the flood?" I pushed the newspaper into my bag and looked at him. "I'm sorry, what?" He stepped closer. "I asked if you knew about the flood." I looked around. "What flood?" " The flood." He said. He pointed to a shell in the limestone wall in front of us. "See this shell? This shell got here during a flood. All these shells in all these walls got into the rocks during a big flood. A flood that covered up a lot of land." Images and information flooded my mind like a slideshow on fast forward. Shells, rock, limestone, water, sea, millions of years. Deposition, sediment, cementation, calcification. "Really?" I said. "There are sea shells on top of Mt. Everest." He said. "Wow." I said. And so we talked. We talked about religion. He told me about how he'd had a religious/spiritual awakening twelve years ago where, after an entire life of religious bel...