Bryson makes it a point to show that Hubble doesn’t fully probe the significance of his findings, further underscoring that Hubble takes more than his fair share of credit (much of which is owed to women like Leavitt). Once again, a new insight—here, that the universe is expanding—is completely groundbreaking, since it implies the universe might not have always been here. Bryson thus shows that the more humans learn about the universe, the more we realize how miniscule our knowledge is.