Here&#x27;s the problem with this: the planets&#x27; orbits aren&#x27;t circles.  And scientists had good enough measurements, that they <i>knew</i> circular orbits didn&#x27;t match the observed behavior.  So neither of those models are very good.  It wasn&#x27;t until people figured out that orbits are ellipses instead of circles, that we actually had a model that was simpler <i>and</i> more accurate than the cycles-and-epicycles of geocentrism.