 Realists have further resources, however, which can be deployed to supplement a move such as Copp’s, in a way that blocks the above dialectical worry raised by Street. Street’s objection to Copp, after all, has teeth only if the realist has already granted the strong claims about “tremendous” and pervasive evolutionary influence “saturating” our moral beliefs across the board. It is far from clear, however, why realists should accept such strong claims to begin with. As discussed in section 2, it seems doubtful that the scientific evidence itself supports such strong claims about the etiology of ‘our’ moral beliefs. Even if there is significant evolutionary influence on the content of many of our moral beliefs, it remains possible that many of our moral beliefs are arrived at partly (or in some cases wholly) through autonomous moral reflection and reasoning, just as with our mathematical, scientific and philosophical beliefs.