The value add is not for people who have already seen the article from 2013 that you linked. It's for people who have never been exposed to this idea before. Y

The value add is not for people who have already seen the article from 2013 that you linked. It's for people who have never been exposed to this idea before. You could have added value just as easily by saying something like "this article from 2013 does a good job of explaining the same topic: ..." But you chose to be rude.