Please discuss Keynes' concept of \"uncertain" knowledge and what it may imply for our ability to (a) measure risk in portfolios of nancial assets and to (b) make \"rational" investment decisions. Given our inahility to accurately \"do the math" when we are making decisions about future events with uncertain outcomes, please describe how people [like you and me} actually make those decisions? What implications may this "decision making reality" have for the way financial markets actually function? Please cite specific passages from John Cassidy's hook and ]im Crotty's paper to support your arguments in this essay