well... you can always page across the fold. intuitively I value the ranking of comments of olde higher than a potential contemporary re-evaluation of randomly

well... you can always page across the fold. intuitively I value the ranking of comments of olde higher than a potential contemporary re-evaluation of randomly presented previously less relevant content. a site keen on high engagement certainly would a/b test these hypotheses lol. but the key is to make the previous content available without dang hand-picking it...