I will just say this: there are both tried and true and normed audiences and purposes as well as dynamic and non-evergreen contents. This is vague I understand but the kinds of content in social media is always changing. When the algorithm changes so, too, does the shape and style of content. I don't know if the larger values, audience and purpose, change, but I suspect the even larger ones like empathy are super evergreen. Sorry. I wish I had more time to make this shorter.