In the fall of 1969, I was a freelance journalist working out of a small, cheap office I had rented on the eighth floor of the National Press Building in downtown Washington. A few doors down was a young Ralph Nader, also a loner, whose exposé of the safety failures in American automobiles had changed the industry. There was nothing in those days quite like a quick lunch at the downstairs coffee shop with Ralph. Once, he grabbed a spoonful of my tuna-fish salad, flattened it out on a plate, and pointed out small pieces of paper and even…