The gift of our vision is easy to take for granted. Yet, the more we dig into this amazingly intricate system, the more grateful we might get. On this ID The Future, host Andrew McDiarmid begins a two-part conversation with physicist Brian Miller about the intelligent design of the vertebrate eye. Dr. Miller reviews the evolutionary scenario for the origins of human vision, explaining where it collapses for lack of empirical evidence. Then he explains why it's helpful to approach biological systems from an engineering standpoint. This is Part 1 of a two-part conversation.