As wedrifid said, reviving “dead threads” is fully acceptable and even encouraged in many occasions, AFAICT.
The one thing to be careful of is to enter argument mode or ask questions or offer specific, targeted insight to a particular poster on a very old post. Many of us have wasted some time early on by answering the questions or debating the assertions of an old comment originally made on Overcoming Bias before the transfer and where the author is long gone or never came to LessWrong in the first place.
As wedrifid said, reviving “dead threads” is fully acceptable and even encouraged in many occasions, AFAICT.
The one thing to be careful of is to enter argument mode or ask questions or offer specific, targeted insight to a particular poster on a very old post. Many of us have wasted some time early on by answering the questions or debating the assertions of an old comment originally made on Overcoming Bias before the transfer and where the author is long gone or never came to LessWrong in the first place.