 However, the recent work by de Lazari-Radek and Singer (2012, 2014, 2016) has opened up some ingenious new lines of argument in this area, arguments that, it is claimed, are more thoroughly Sidgwickian. As noted, Sidgwick had argued that apparently self-evident claims had to be clear and precise, able to withstand critical reflection, consistent with one another, and able to win a consensus of experts, though in other writings he collapsed the first two into just one condition. De Lazari-Radek and Singer seem less concerned to reject any element of Sidgwick’s account than to add to it, such that the significance of evolutionary “debunking” arguments is recognized, and this leads them to reject Sidgwick’s Dualism: