I've never even clicked "threads" before. The fact that I've used HN for years and never even thought to click "threads" means it is insufficient for me. What a

I've never even clicked "threads" before. The fact that I've used HN for years and never even thought to click "threads" means it is insufficient for me. What are "threads"? Are they any conversation I participate in or only ones I've started? If I make a post, is every comment on it in "threads"? I'll keep checking that link and see what shows up there. I think what the other person suggested "threads (12)" might make it sufficient. If there was a growing number next to "threads" I would have clicked it years ago.