Bruce Greenwood

I think on some level, that's a fear that exists in everybody, that if we're tested, we won't make the courageous choice. We won't make the decision that would make us heroic. We make the decision that would reveal us to be all too human.

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.