In the episode the crew is wrestling with a concept that would end up leading to the subtitle of the Brave Cities book. Like all of these episode, they are grey pages because in them we are actively exploring the ideas rather than just reporting on some finding. This episode explicitly uses the image of a beaker that we are putting different ingredients into as an experiment and it serves as a good reminder for all of us that this is the intended posture of each and every one of these conversations.
