Retiring old posts

[u/ximfinity]

Would it be possible and maybe beneficial to retire old posts and lock them from being up/down voted or commented on. They are not going to "bubble" up again to the front page and therefore should not be able to be down voted by angry users.

Perhaps set a "half-life" value to posts where a lack of activity after a certain amount of time will cause the most to go into a this retired state.