Keynes's initial, introductory presentation of his inexact measurement, approximation approach to interval valued probability occurred on pages 38-40 of chapter III of the A Treatise on Probability. Keynes used a simple diagram on page 38 to illustrate the non linear and non additive nature of...

Economists, working in the Heterodox schools of economics, have severely confused Keynes's interval valued probability–weight of the evidence approach to decision making from the A Treatise on Probability, that Keynes integrated into the General Theory by way of his definition of uncertainty...

Keynes recognized that there were a few cases where his rational analysis of decision making under conditions of uncertainty and risk using: (a) interval valued probability in Parts II and III of the A Treatise on Probability,(b) decision weights in Part IV of the A Treatise on Probability ,or...

Nearly one hundred years after Keynes published his A Treatise on Probability in 1921,it appears that practically no philosophers have read Part II of the A Treatise on Probability in either the 20th or 21st centuries. This simply means that no modern day philosopher is in any position to...