This was a stronger than expected experience for me. I'm not a long-distance runner, but it reminded me of long hikes at summer camp both where I was the first and last to finish, as well as other big long-term goals I'd achieved but maybe some friends hadn't.
I felt particularly conscious of how it was easy to sit back and know what the right choice was, but I could see myself getting careless and not making that choice in real life.
We all say we'd stick with Susan, but would we?
I played through a few times as I was curious what else would happen, and I got different and interesting endings, but all the same I'm glad you wrote the guide so we could see them all. It's something I want to come back to once I've looked at the other ParserComp entries. Who knows, I might use it as a way to take a break as I'm looking through the rest!