> What’s the purpose of starting a blog post like that? The author is excusing themselves for beginning the post by adding some context - that is likely alread

> What’s the purpose of starting a blog post like that? The author is excusing themselves for beginning the post by adding some context - that is likely already well-known to readership. They are saying "yes, I know you already know this, but please excuse me while I pop in some context in case there's a reader who is unfamiliar with it". Hope this helps.