This book appears to be a revised edition of an earlier 2007 book.In general, the author is correct, although he is unable to follow Keynes's technical analysis in chapters 20 and 21 that allowed Keynes to successfully generalize the basic monetary equation of exchange,MV=PO,where M =the money supply,V = Velocity of money,P=the price level and O=real output to MV =pO=D,where p is an expected price and V is now the income velocity,in order to incorporate uncertainty/the speculative demand for money through the specification of the elasticities e ,ep subscript and ed subscript.Money used for speculative purposes,M2, is thus the root cause of inflation,deflation and involuntary unemployment.M=M1 +M2.If M2=0,then the standard equation of exchange holds.
The author is correct that Keynes wanted to maintain a permanent ,low ,fixed rate of interest while simultaneously minimizing the M2 component so that the vast majority of loans would be lent to Adam Smith's sober people who create the jobs.Unfortunately,the forces of banking and finance,represented by Wall Street, will object.
There are two errors in the book.First, Paul Samuelson,Sir John Hicks and Alvin Hanson did not betray Keynes.All three were misled by Joan Robinson,Richard Kahn and Austin Robinson into believing that the GT was full of major mathematical and microeconomic errors because Keynes had not taken the 20 minutes necessary to master the theory of value.Keynes's microeconomic analyses in chapters 20 and 21 was thus overlooked.The " What did Keynes mean by Z " quagmire is the direst result of the failure of Joan and Austin Robinson and Kahn to recognize that Keynes was using the standard theory of pure competition with one fixed input-one variable input while simultaneously incorporating expectations through the use of expected prices and expected profits.
Second,the claim made by Post Keynesian economists ,who follow the dogmatic claims of Joan Robinson and Richard Kahn, that Keynes did not understand the mechanics of his aggregate supply function and curve,is simply false.Post Keynesians still can't work out the simple footnote 2 on pp.55-56 of the GT that specifies that dZw/dN=1=dDw/dN =pO'(N)/w so that w/p=O'(N) or the real expected wage,w/p,equals O'(N), the marginal product of labor.Post Keynesians are still trying to figure this out 75 years after Keynes published the GT.How can they possibly expect to meet high powered,mathematically trained neoclassical economists in intellectual battle if they can't work out a calculus I problem ?????? The answer is that they can't and will not be able to survive in a one-on- one debate.