Did you ever think about how many different crocheted ribbings there exist? I think most of us just do whatever a pattern tells us - or you find a page telling you 'how to crochet a ribbing'. As in one ribbing.
Being conscious about the different kinds of ribbing is an advantage, if you want to be able to change an existing pattern or make your own design.
Being conscious about the different kinds of ribbing is an advantage, if you want to be able to change an existing pattern or make your own design.