english: Some of the greatest minds in history - Aristotle, Ptolemy, Da Vinci, Decartes - have all wrestled with this problem and failed to generate an adequate explanation.
non_english: Veľa veľkých mysliteľov v histórii: Aristoteles, Ptolemaios, Da Vinci, Descartes. Všetci s týmto problémom bojovali, no nenašli adekvátne vysvetlenie.