’s logical theory of probability is an imprecise theory of non additive probability based on intervals and dealing with rational … degrees of belief, whereas Ramsey’s theory is a precise theory of additive probability that deals with degrees of belief only …

By the time that Keynes’s logical theory of probability appeared in 1921 in his A Treatise on Probability (1921 …). Keynes was a millionaire by 1922. Keynes’s theory is an interval valued approach that can be applied in situations that …, w, is equal to, approaches, or is close to 1, 0≤w≤1, then Keynes’s theory reduces to the use of precise, exact …

Sraffa made a number of margin notes in chapter 17 in his copy of the General Theory .Contrary to Joan Robinson’s 1978 … claim ,that Sraffa had uncovered logical and mathematical errors in Keynes’s liquidity preference theory of the rate of … interest when he generalized his theory in chapter 17,the margin notes made by Sraffa are all erroneous .Sraffa’s margin notes …