How are virtues and vices separated?
The virtues are processes that we think are reliable in the real world; the vices are the ones that we think are not reliable in the real world. Re: Problem #2 How come, when we introduce a hypothetical possible world example in which a process like psychic visions is reliable, do we still feel reluctant to count its deliverances as justified? We dont normally tend to start from scratch and figure out the reliability of a mechanism, then assign it a position on the list of virtues or vices; we tend rather to look at a case and see how it matches up with our existing (conservative, entrenched) ideas of which processes work. Just being told that an imaginary process is reliable in an imaginary world is not enough to make us take seriously the idea that it is a virtue. You could gradually come to learn that some process should be switched from the list of virtues to the list of vices (or vice versa), but this doesnt happen easily. The main idea here: we work on the basis of some rules of
