[corinroyal]

A sentence is not a paragraph.

[frontfor]

Do you have a more substantive reply to the user you’re replying to? These are genuine observations/experiences. If you disagree or think they are misguided, then point them out.

[BeetleB]

The issue is that the main comment in the thread complained about design, but gave little concrete information to discuss. If I come and say "Design matters, and HN's design sucks. Go and compare it to Reddit/whatever other site," you likely will have little idea of what my beef with HN is.

[stronglikedan]

Of course it is. It's usually avoided depending on the level of formality/style of the writing, but there is no grammatical rule that says a paragraph cannot be one sentence long.