How does facebook decide what the "top stories“ are on you newsfeed?

[Bob]

I hate that option! Nothings ever in order! Why does it even exist!?

[Amanda]

Essentially Facebook is using an algorithm based on a variety of item in top stories. Those items include your relationship (i.e. have you identified the person as a family member or close friend,) and the popularity of the post (people, especially your friends, commenting on it a lot or many people liking a post.) Therefore a post may not start as a top story, but it could become one as time passes and people respond to it.

[Ben]

Mark Zuckerberg does it at random because he thinks it's funny to make facebook worse.