In the beginning of The Republic , Socrates demonstrates to Thrasymachus, I think, that his theory of justice, i.e., "do good to one's friends and evil to one's enemies", is false because it may be that one has evil friends and good enemies, or be mistaken about in fact who is our friend and who is our enemy. I wonder, though, about this:
We are faced with three potential questions. One possible question is "who are our true friends and our true enemies?". Another possible question is "are our true friends good and our true enemies evil?". A third possible question is "what is justice, considered apart from irrelevancies like our friends?".
It seems to me that we are much more likely to be right in our judgments about the first two questions than we are in our third. We might be wrong in all three, of course, but if asked to either 1) accurately identify one's friends and evaluate their worthiness or 2) create a theory of justice, I would suggest that the vast majority of people (perhaps why we...