I really like the contradiction element. This might be a reader error, but I just didn't feel like the doc supported it. It felt like the push was for the stories to synch up and make sense, not for players to really lean into looking at the contradictions between stories.
It's still a cool game either way.
A little bit of guidance on how to contradict stories a little (agree on some basic details first, then individually come up with differences) might help, but I don't think it's required to play.