Having said that, Keynes did not think Hayek’s philosophy was of practical use; this was explained later in the same letter, through the following comment and prophecy: “What we need therefore, in my opinion, is not a change in our economic programmers, which would only lead in practice to disillusion with the results of your philosophy; but perhaps even the contrary, namely, an enlargement of them. - See more at: http://hayekcenter.org/?p=1954#sthash.sJLJxn5U.dpuf