I followed with much interest the recent discussions on Meta about the the community being perceived as unwelcoming to outsiders. We may disagree with that, but we must agree with the moderators that the perception is there and it is certainly wise to look for solutions (if any).

In order to do this, in my opinion we should first ask ourselves what is our idea of the scope and mission that MO should accomplish. I see (at least) three options, not mutually exclusive:

1. MO should be a help-desk for "professional mathematicians" (in a broad sense) when they are stuck in their research activity (in a broad sense).
2. MO should be a wikipedia-like repository of good mathematical questions and good mathematical answers, at a "research level" (in a broad sense).
3. MO is mainly an addictive game, where mathematical knowledge is used to engage in some kind of stimulating intellectual competition (in a healthy sense), and reputation has the role played by the score in a chess tournament.

It seems to me that the corrective actions to implement in order to solve the "perception problem" depend on the order of importance that we give to $(1)$, $(2)$, $(3)$, and possibly to some other scope that at the moment I do not see.

So let me ask this (very) opinion-based, fundational question:

Question. What is, in 2021, the primary scope and mission of MO?