Kaines and Knight, Risk, Uncertainty and Profit

In 19 21, the same year as kaines's treatise on probability is published. frank nightt a very different man to kaines in many respects. Also converges on this distinction between risk and uncertainty. And knight's book, risk, uncertainty and profit is published that year. Do you know if kaines and knight were aware of each other? No, i of course knight was aware of kane's am as the author of economic consequences of the piece,. but not aware, i don't, think, of any of his studies in probability because they were published the sameyear as knight's own book. They're different. With caines, uncertainty was