Joseph B. Wirthlin

The light from the sun breaks through space, bathing our planet as it encircles the sun with life-giving warmth and light. Without the sun, there could be no life on this planet; it would be forever barren, cold, and dark.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.