Use of Time wrote:
I remember liking this one when I first saw it but I have to be honest that the rewatchability of this episode is pretty poor for me. Watching the same scene over and over again gets tedius when you already know the endgame.
The joy of the episode is how each time is is a tiny bit different, and you can see how those tiny bits gradually come together to give them what they need to get out. And at first the changes are tiny, but as they get closer and closer to the solution they start taking much larger steps.