As the University of Michigan psychologist Ethan Kross writes in his book Chatter: The Voice in Our Heads and How to Harness It: “We’re embedded in our physical spaces, and different features of these spaces activate psychological forces inside us, which affect how we think and feel.” If we see order outside, it helps us to feel a bit less chaotic inside, he writes. “[It] is comforting because it makes life easier to navigate and more predictable.”