I wonder if there is a place on the internet with the format of HN and a not so dissimilar quality of comments but focused on World events, philosophy, art, science ( excluding politics because it's too prone to flamewars).
By the way (off topic), sometimes there are threads on HN, that superficially look interesting, but that feel kind of "primitive" if you are used to read philosophy. I notice them probably because on other forum I just expect the thread to be not interesting at all.
I don't have an example at hand, but in those occasions it made me think there must be some kind of corollary of the "Gell-Mann Amnesia effect"[0] at play.