In the 20th century, astrology has surged back into popularity. It regained its foothold in Europe, especially in Nazi Germany. "How can a pseudoscience like astrology flourish within the most sophisticated technological society in human history? Many commentators have associated the popularity of astrology with scientific illiteracy. In 1990, Edna Einsiedel surveyed 2,000 adult Canadians. She found that 45 percent thought astrology was at least partially scientific. At the same time, one in five Canadians of those surveyed did not know that the Earth goes around the Sun, and half did not know that the Earth goes around the Sun in one year." Correlation does not mean cause. Because x planet is somewhere when y with a certain personality trait is born, the placement of x does not mean it caused y's personality trait.