Years ago my wife, Jeri, and I were driving on the interstate when we were overcome by a white cloud of windblown snow. “I can’t see a thing!” I shouted. We were experiencing a complete whiteout. I lost all sense of direction. I couldn’t see the road or other cars. Everything had vanished, replaced by this strange, mystical blizzard of white. The only thing I knew to do was to slow down and pray that I was still on the road.