>(Sidenote: Ah ok. So that's how to reply on HN once a comment thread has reached a certain depth: click link then reply.)
I don't think it's about depth; you can't reply to very new comments (presumably to give people a chance to delete mistakes?) but if you refresh the page a minute or two later the reply link will be there as normal.
Re:0x10c (Notch's new game)
by icebraining on Sunday October 14, 2012 @09:28AM
(#4651415)
The reply link takes more time to appear as the thread becomes deeper. The purpose is to create a 'cool off' period to avoid very heated discussions.
(Sidenote: Ah ok. So that's how to reply on HN once a comment thread has reached a certain depth: click link then reply.)