| http://www.w3.org/ns/prov#value | - Instead, if you ask, ???Why would sympathetic stimulation lead to pupillary constriction and not dilation???? you might learn that a caveman doesn???t need much light when sleeping (parasympathetic stimulation ??? pupillary constriction), but he would need plenty of light when running from a tiger, especially at night when tigers are active (sympathetic stimulation ??? pupillary dilation).
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