Editing Naturalistic fallacy (section)

===Bound-up functions===
Ralph McInerny suggests that ''ought'' is already bound up in ''is'', insofar as the very nature of things have ends/goals within them. For example, a clock is a device used to keep time. When one understands the function of a clock, then a standard of evaluation is implicit in the very description of the clock, i.e., because it ''is'' a clock, it ''ought'' to keep the time. Thus, if one cannot pick a good clock from a bad clock, then one does not really know what a clock is. In like manner, if one cannot determine good human action from bad, then one does not really know what the human person is.<ref>{{cite book|last=McInerny|first=Ralph|title=Ethica Thomistica|year=1982|publisher=Cua Press|chapter=Chp. 3}}</ref>{{page needed|date=February 2016}}