> None of this is actually secret (it would be common knowledge for anyone employed in the industry) but isn't well-known outside of it. This audience has a lot

> None of this is actually secret (it would be common knowledge for anyone employed in the industry) but isn't well-known outside of it. This audience has a lot of professionals in it so a lot of this might not be news to you. They said none of this is a secret in the 3rd paragraph of the article.