| http://www.w3.org/ns/prov#value | - A theory of the latter kind maintains that pain or pleasure is an aspect or property of a physical system (a brain-state) such that the physical system itself, operating by purely physical laws, produces the behaviour normally associated with pain and pleasure (e.g. cries of pain; avoidance of painful stimuli; over-indulgence in sweet-tasting foods when available, etc.)
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