Reddit is interesting: its default (?) sorting is by controversial. Really bad universally unacceptable comments get buried. But comments with mixed upvotes a

Reddit is interesting: its default (?) sorting is by controversial. Really bad universally unacceptable comments get buried. But comments with mixed upvotes and downvotes ("controversial") are shown higher than simply upvoted comments. This promotes interesting conversations and exposes readers to broader world views without shattering readers faith in humanity.