I hope I can explain this properly. I would be grateful for your opinions.
I read an article within the wider area (but not topic) of my PhD. I am interested in X subject, and the article is about Z. I believe (knowingly or unknowingly) this guy is actually making a great example for the X subject, without even saying anything about the X subject. I would like to make this comment in my thesis. What I am trying to say is a positive thing, not accusing the author for anything. Do you think it would be ok to write this opinion and cite his article?