Almost always. A quick scan often tells me whether the article is worth reading or not: topic and quality.
I hold off on responding to anything until I have read the article, though.
The simplicity of presentation on Hacker News is one of its defining virtues.
view-source:https://news.ycombinator.com/hn.js
That way, the root page is the main page, the comments are children and the link and other links from the comments are children of it's comments page