How does the "popular post" thing work? Cause I'll see posts with minimal comments on there then a post with 4x the…

How does the "popular post" thing work? Cause I'll see posts with minimal comments on there then a post with 4x the comments is in the regular feed. It might just be me but I'd rather see the posts with the most comments/active discussion. (That could also eliminate a lot of "what happened? Tag me in it, send me screenshots" Posts)