HN is like you go to ces or any other trade fair. GitHub is more like a city there are different places, open stores, private building, parks. Everyone can go

HN is like you go to ces or any other trade fair. GitHub is more like a city there are different places, open stores, private building, parks. Everyone can go into stores. Repo that is promoting themself on GitHub or other websites. No one will go into your private house that you don't want into it. Private repo or repo with no readme , description or topics. If you have a park with trees that look nice, maybe some people like it too and wann chill on it, if you don't want people on it write a shield private or do not step on the grass. Repo that is willing to be used by third parties, as other are interested into it as they see it. You don't want something write a rule into readme.