I found [this question](http://meta.stackoverflow.com/q/13317/184981) here on Meta from 2009, and it was closed recently as a duplicate of a question that was posted much later!

Why is that? It's not just that older questions can't be duplicates of newer questions, but I also wonder why people dug up this old one and started to cast close votes on it all of a sudden; it hadn't had any activity for years.

Not that I have much reason to have it reopened or to have the newer one closed, but I'm just curious.