>> Do you not think things which are balanced should remain so unless acted upon by an outside force? The net effect is what is important. A complex, interconn

>> Do you not think things which are balanced should remain so unless acted upon by an outside force? The net effect is what is important. A complex, interconnected and ever-changing system like nature cannot be evaluated so easily. You can evaluate the 'state' at a particular 'point in time', but there is no way to know if the equilibrium has been disturbed.