> This is basic logic. Miles is talking about big
> conceptual systems (I think), which cannot exist
> without basic logic. You can easily have an
> "irrational" conceptual system that is based on logic.
> In fact, all of them are.
So you agree that the norms of "basic logic" are universal (I don't know if Miles agrees; I'll have to let him speak for himself). I'd argue that the norms of "basic" observational and inferential reasoning (i.e the means we employ to arrive at "big conceptual systems") are also universal .
-- Luke