David A. Bednar

If something we think, see, hear, or do distances us from the Holy Ghost, then we should stop thinking, seeing, hearing, or doing that thing. If that which is intended to entertain, for example, alienates us from the Holy Spirit, then certainly that type of entertainment is not for us.

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.