J M Keynes's two logical relations of rational degree of probability, α, 0≤α≤1 and Evidential Weight of the Argument, w, 0≤w≤1, where w measures the degree of completeness of the evidence, can't be represented or associated with ordinal probability, although Keynes's theory of...

A major error in analyzing how Keynes operationalized his logical theory of probability in 1921 is to assume that Keynes's theoretical structure is presented by him at the end of Chapter III of the A Treatise on Probability on pp. 38-40, which contains a diagram on page 39 that Keynes himself...

Keynes's logical theory of probability was NOT the first explicit and detailed approach to logical probability. George Boole was the first academic to provide an explicit, systematic and detailed logical probability approach in history. Keynes's own logical theory was built on both the work of...

J.M. Keynes's method in the A Treatise on Probability, inexact measurement and approximation using non additive upper and lower probabilities, is a formal, inductive logic built on G. Boole's original Boolean Algebra and Logic. It has nothing to do with "…a given list of possible behaviors....