Like Selikoff, Frank is intensely interested in outcomes that help workers show that their work has caused them illness. In furthering his interests, Frank sometimes makes things up, such as the “each and every exposure” theory. Frank is also a proponent of the “big-tent” theory of causation, which attempts to keep every possible defendant in a lawsuit, bu asserting that every asbestos exposure, regardless of its intensity, duration, quantity, variety of asbestos, or fiber length, constitutes a cause of plaintiff’s lung cancer.