How do I reply to a thread?

1 points by JonFParis ↗ HN
As the "target" of a recent thread I'd like to be able to respond to some of the comments but see no option for replying. Can someone please enlighten me - this board/list doesn't seem to operate the way most that I am familiar with do.

6 comments

[ 12.2 ms ] story [ 403 ms ] thread
Each comment has a small "reply" link under it

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I can see it on your response (and it was what I was looking for) but I see no sign of it in the posts to this thread https://news.ycombinator.com/item?id=10093590
You can't comment on old threads.
Fast moving world when 20 days is "old". What is the time limit? I guess I'll have to start a new thread or just let it go.

Thanks to those who responded.

The time limit is two weeks at the moment. Your article got a good number of upvotes, so many readers found it interesting. Sometimes the comment threads are a small and biased sampling and not representative of the community at large.
We can open old threads when there's a reason, and I think the author of an article showing up to comment is more than reason enough. So I've reopened that thread for you. Comment away! Also, please see https://news.ycombinator.com/item?id=10201327.