“I’m Cave.”

My Brain: "Johnson"
Me: "..... damn it that was good."

When I saw the synopsis, I wasn't quite expecting it to be humans that was the precursor civilisation. Especially because it's not actually tagged on the story. Did you run out of room for tags or something?

I'm not quite certain why Twilight's words about learning from the stuff left behind by humans is so controversial. Celestia herself says in the opera hall or whatever it was at the beginning that humans created ponies. I'm not certain if that's meant to be literal or metaphorical, but when one civilisation creates another, usually the first civilisation is more intelligent and advanced than the one it created.

Once we got into the intermissions with the guard pony and the diamond dog he was guarding, I had a pretty good feeling what was going to happen in the end as soon as Looking Glass dropped his guard and started talking with Cave. Though I was more expecting Cave to finally kill him when they were playing the card game and he had the last card that was dropped in his paw, but instead he waited a little while longer. I'm going to guess the 'feeling' he was talking about is something related to the humans, and he didn't feel the need to escape until after Twilight's controversial words.