In scientific thought we adopt the simplest theory which will explain all the facts under consideration and enable us to predict new facts of the same kind. The catch in this criterion lies in the word “simplest.” It is really an aesthetic canon such as we find implicit in our criticisms of poetry or painting.

J.B.S. Haldane (1892-1964) English geneticist [John Burden Sanderson Haldane]

“Science and Theology as Art Forms,” Possible Worlds and Other Papers (1927)
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