First of all, when I think about writing an article I do a prior search to see if it was covered before and how well. If only the basics were covered then I expand on it, citing the initial author and putting the link in context.
Second of all this is how engagement works, prior author wrote something he is passionate about and you can bring his attention to your own work, verifying and approving it.
Everyone should learn from you. And I want to see more people commenting and bringing their attentions to the subject being discussed, especially if they have something to say about it :P
As for your article, the subject is very interesting and covers something that I had little to no experience about. Now I know a little and I will wait for more details and results :D
Thanks! Based on the positive response, I'm definitely going to continue referencing past Steemit articles. Glad I can help with engagement in some way as I know its an ongoing issue with SteemSTEM.