There is no relief from Descartes's deceiving demon. If I dig at the roots of my epistemic foundations, that is the bedrock I always find.
Given the deceiving demon, what does an individual possessed of reason take as a maxim of action? Reason itself, alone, is inert, and must be moved from without.
Even alethetropy cannot have an absolute foundation. I want to use it as my pedestal, but when I push against it, it shifts.
Alethetropy, then, must be taken as a guideline, a rule of thumb. It can serve as a moral basis, but like any other, must it be accepted on faith?