I also wrote an explanation, but after I submitted, I saw three more, all of which beat mine (yours was the first looking at the comment ID), so I deleted it.

I also wrote an explanation, but after I submitted, I saw three more, all of which beat mine (yours was the first looking at the comment ID), so I deleted it. I personally wish that people would check to see if someone else beat them or wrote a better answer (yours is also a better answer than the other two, but alas this account does not have enough karma to downvote the others), and if so, delete theirs like I did. Oh well.