This was, for me, an especially interesting article.

There does seem to be some connection between a necessary communality--commonality--of truth/knowledge and 'objective' in the sense of pertaining to material existence, i.e., Rorty's 'intersubjectivity." Yet, humans being what we are, even the most 'obvious' observation can be trumped by a contrary belief (e.g., 'flat earthers'). Still, no matter how many people share any belief, it can only be strictly subjective knowledge, without any impetus for its acceptance as knowledge that can be shared by people in the way that at least certain observations within material existence can be, such as 'Fire burns flesh'. So an ethic following from observation within material existence could potentially provide a universal commonality that no ethic based on a belief (whether sacral or secular) ever can. I am convinced that 'Human beings have no choice but to effect choices' is such an observation.