[JohnFen]

I don't think you can assume that no response means the idea is bad. When I pass on these, sometimes it's that, but sometimes it's that the idea is something that may be good, but isn't something of interest to me, or isn't something I know anything about, or isn't something I have an opinion on. Sometimes, I don't feel like I understood what was said well enough to have a comment about it. Sometimes, it's about the title: if the title doesn't tell me the topic, or is clickbaity, then I'm not even going to read the post. Sometimes the idea is something that is not actually relevant to what HN is about.

And sometimes it's just timing -- as in, I never saw it.

[samehsbs]

it's kind of a mix of all those points! Usually i click on titles that share my interest.