Donald Davidson famously offered an explanation of “first-person authority”. However, he described first-person authority differently across different works—sometimes referring to the presumptive truth of agents’ self-ascriptions of their current mental states, and sometimes referring to the direct self-knowledge that agents often have of said states. First, I show that a standard Davidsonian explanation of first-person authority can at best, and with some modification, explain the presumptive truth of agents’ self-ascriptions. I then develop two Davidsonian accounts of direct self-knowledge—one accounting for (...) its function and another accounting for its source—pushing back in the process against deflationary and quietist rejoinders to these projects. Finally, I relate my Davidsonian accounts of direct self-knowledge back to the modified Davidsonian account of the presumptive truth of agents’ self-ascriptions. (shrink)

The first explicit argument for the incompatibility of externalism in the philosophy of mind and a priori self-knowledge is Boghossian’s discrimination argument. In this essay, I oppose the third premise of this argument, trying to show by means of a thought experiment that possessing the “twater thought” is not an alternative, a fortiori not a relevant alternative, to having the “water thought.” I then examine a modified version of Boghossian’s argument. The attempt is made to substantiate the claim that the (...) standard incompatibilist support for its second premise is untenable. Furthermore, a third Boghossian-style argument is rejected on the ground that either its second premise cannot be warranted in the way suggested by incompatibilists or its third premise is mistaken because having the “twater thought” instead of the “water thought” is not relevant. Finally, it is argued that the discrimination argument cannot be saved by invoking closure. The upshot of my discussion is that a compatibilist can dismiss Boghossian-style arguments for incompatibilism without having to deal with fundamental issues concerning self-knowledge and the nature of slow switching. (shrink)