Sir, you raise important concerns, which I will try to discuss in depth in a future post. At any rate, I envisage that the "scientific front-end" we want on Hive won't auto-conceal (i.e. censor) content merely because of downvotes. Upvotes and downvotes control the economic rewards that Hive as a social blockchain distributes, and as I understand there's no way around it. But as to visibility -- at blockchain level posts cannot be censored, and each front-end can have its own set of rules / algorithms to determine what should be hidden -- and here we need to be extremely careful as to make sure we won't have meritorious works being censored because of downvotes, ideology, popularity, etc. etc. Otherwise this whole idea comes to naught.