Alright, it seems that some people don't really see clamping from the broader scope, and I think it comes down to not entirely grasping the idea of "levels of organization" in a machine. It starts at the level of particles or a unit of some kind, goes up to molecules, then macrostructures, cells, groups of cells, tissues, organs, body regions, human or other organism, group, town, city, state, country, macro region, planet. Whether and the extent to which an object at any level of organization truly can be considered self contained and discrete is irrelevant.

In looking at one's own body, what we first find is organization. Your epidermis in not lining your bones, it is constituting your outer surface, because this allows it to perform its function relative to the overall system. When you digest food, it goes into a sack in which bile, enzymes, etc are secreted into an environment of low pH. The food particles don't dump into circulation because you don't want all that digestive activity and potential happening arbitrarily throughout the body. Likewise, the heart does not "choose" to beat, the muscle does not choose to move.
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