  Premise (8) is denied by some contextualists, who claim that, even if a moral belief is not justified, if it is shared within a certain social context, then it may be used to justify other moral beliefs (cf. Wellman 1971, Timmons 1999). However, moral skeptics reply that social contexts are often corrupt, and no social context by itself can show that a moral belief is true, reliable, or, hence, justified in the relevant way.