recursive reply-contexts

 recursive reply-contexts  (previously confusingly called as reply-thread and history-thread ) are a list of reply-contexts displayed above a reply post, where each reply-context is there to show context along an in-reply-to chain of links from a reply post all the way up to an original post (that itself is not a reply).

Ben Roberts
Ben Roberts displays recursive reply-contexts on his site since 2014-09-12. Examples:
 * https://ben.thatmustbe.me/note/2014/9/12/1/_
 * https://ben.thatmustbe.me/note/2014/9/12/2/_

Why
Reader comprehension. You should show recursive reply-contexts above your reply posts to provide background and context to what your reply posts are about all the way up to what post started it.