Keynes provided two versions of his IS-LM(LP) model in the General Theory. The first version was the verbal, English, literary, prose version contained in chapter 18 of the General Theory. This version was targeted for economists, such as Joan Robinson and Dennis Robertson, who could not grasp a...

J M Keynes's approach to the use of mathematics is based on his interactions with Bertrand Russell, Alfred North Whitehead, William Ernest Johnson, C. D. Broad, G. E. Moore, and Alfred Marshall. His views were carefully expressed in the A Treatise on Probability and General Theory. Keynes...

Keynes's original IS-LM (LP) model of 1933, although a major conceptual breakthrough, was technically and mathematically flawed because Keynes incorporated realized and expected variables in the same set of equations.Keynes had solved this problem by early 1936 by formulating a completely new...

Keynes made major improvements in the manner in which he presented his IS-LM model in the General Theory in February 1936 when compared to the 1934 Draft copy of June–July Keynes's improvements were with respect to the specification of the Consumption function, marginal propensity to consume,...

The editors of the Collected Writings of John Maynard Keynes made an unfortunate blunder when they assigned to Richard Braithwaite the task of writing an editorial foreword to Volume 8, A Treatise on Probability, of the Collected Writings of John Maynard Keynes. Braithwaite never read the A...

Jerzy Neyman analyzed an imaginary, non existent, urn ball problem that he thought was taken from J M Keynes's A Treatise on Probability in his Lectures and Conferences on Mathematical Statistics and Probability (1952). Neyman apparently never read the book for himself. He apparently relied on...