[O]ur moral judgments are less reliable than many would hope, and this has specific implications for methodology in normative ethics. Three sources of evidence indicate that our intuitive ethical judgments are less reliable than we might have hoped: a historical record of accepting morally absurd social practices; a scientific record showing that our intuitive judgments are systematically governed by a host of heuristics, biases, and irrelevant factors; and a philosophical record showing deep, probably unresolvable, inconsistencies in common moral convictions. I argue that this has the following implications for moral theorizing: we should trust intuitions less; we should be especially suspicious of intuitive judgments that fit a bias pattern, even when we are intuitively condent that these judgments are not a simple product of the bias; we should be especially suspicious of intuitions that are part of inconsistent sets of deeply held convictions; and we should evaluate views holistically, thinking of entire classes of judgments that they get right or wrong in broad contexts, rather than dismissing positions on the basis of a small number of intuitive counterexamples.

Nick Beckstead, On the Overwhelming Importance of Shaping the Far Future, doctoral dissertation, University of Rutgers, New Brunswick, 2013, p. 19