Tests vs laws

Newton, as Jeffreys pointed out, derived his law of gravity 100 years before Laplace proved it by discovering Jupiter’s and Saturn’s 877-year cycle: “There has not been a single date in the history of the law of gravitation when a modern significance test would not have rejected all laws [about gravitation] and left us with no law.” [Ibidk., 391]

Bayes, on the other hand, “makes it possible to modify a law that has stood criticism for centuries without the need to suppose that its originator and his followers were useless blunderers.” [Jeffreys(1938) 738]