Laughter would appear to be a physical reflex, although even if it is, this still leaves unanswered the question of why the human response to humor is a convulsive spasm of the respiratory mechanism rather than a crossing of the eyes or a waving of the arms.
Steve AllenSometimes things which at the moment may be perceived as obstacles-and actually be obstacles, difficulties, or drawbacks-can in the long run result in some good end which would not have occurred if it had not been for the obstacle.
Steve Allen