natural law and the is-ought problem
-the is-ought fallacy occurs when the assumption is made that because things are a certain way, they should be that way
-can consist of the assumption that because something is not now occurring, this means it should not occur
-asserts that the status quo should be maintained simply for its own sake
-seeks to make a value of a fact or to derive a moral imperative from the description of a state of affairs
-David Hume raised the is-ought problem in his Treatise of Human Nature
-e.g. sex is for procreation, therefore we ought not to use contraception