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But is not the gravitational force an external force?
When you say 'similarly' – do you mean that you similarly regard a single force as not being an external force at all, and regard all other forces as external forces, and then regard that single force as pertaining to a natural tendency?
Are you really trying to say that in the wild no animal ever starves?
But humans are animals, and beneath the veneer, we still behave as any other animal behaves.
QuoteBut is not the gravitational force an external force?In official scientific terms, yes, obviously. I don't know what else to call this, but by external forces, I guess I am essentially referring to all forces that are directed by humans; thus human directed forces? A better way of saying it might be intrinsic forces (gravity and such) versus extrinsic forces (forces directed by humans).
QuoteAre you really trying to say that in the wild no animal ever starves?There was a reason why I put "in general" in bold.
QuoteBut humans are animals, and beneath the veneer, we still behave as any other animal behaves.You didn't even bother to account for a humans brain having much greater capacity for thinking and reasoning.Unless of course you would like to place your existence at the same plane of cognition as that of an ape.
But even if one removes humans from the equation, there are numerous 'natural' forces acting upon water – whether it be the heat of the Sun, or the tidal forces of the moon (the last is actually still a gravitational force, but it is one that causes tides to rise and ebb in relation to the Earth).
Economics is incredibly complex far more so than most normal physical systems like (for example) the way a blob of hydrogen and helium etc becomes a star and evolves.
Most stars form and evolve in precisely predictable ways that are only controlled by the mass of material present in the star.