The four Merton ‘Calculators’ were not only well versed in the current issues of philosophy during the fourteenth century; they actually initiated new groundbreaking scientific postulations. John of Dumbleton was no exception. Because he concurred with many of the positions held by William Ockham (1288–1348)—especially the idea that is commonly referred to as Ockham’s razor, which states that the most simplistic explanations are ideal—he may have learned how to succinctly formulate his scientific conjectures.