"The popular belief that Copernicus's heliocentric system constitutes a significant simplification of the Ptolemaic system is obviously wrong ... [T]he Copernican models themselves require about twice as many circles as the Ptolemaic models and are far less elegant and adaptable." Neugebauer, Otto. The Exact Sciences in Antiquity 2. Dover Publications. 1969 [1957] [2020-09-18]. ISBN 978-0-486-22332-2. (原始内容存档于2020-08-14)., p. 204. This is an extreme estimate in favor of Ptolemy.
"The popular belief that Copernicus's heliocentric system constitutes a significant simplification of the Ptolemaic system is obviously wrong ... [T]he Copernican models themselves require about twice as many circles as the Ptolemaic models and are far less elegant and adaptable." Neugebauer, Otto. The Exact Sciences in Antiquity 2. Dover Publications. 1969 [1957] [2020-09-18]. ISBN 978-0-486-22332-2. (原始内容存档于2020-08-14)., p. 204. This is an extreme estimate in favor of Ptolemy.