Status Updates From Fragmentation of Reason: Pr...

So people who are like us are intentionally describable and those who are not, are not, and that’s it

The first two chapters deal with a priori and a posteriori cases for rationality: in the a priori case, intentional ascription rests on rationality assumptions, but then there is no independence that people are rational. In the a posteriori case, rational beliefs are naturally selected, but there is no evidence for that.