Street’s argument has also been challenged by such critics as Russ Shafer-Landau (2012). However, her argument, and similar arguments, have been acknowledged by some moral realists, such as David Enoch (2011) and Erik Wielenberg (2014) to pose a significant problem for their view. Enoch, for example, even though he offers a response to Street’s argument, evidently has some worries about the strength of his reply. Wielenberg, to avoid the criticism that in a non-theistic universe it would be extr