'Fear the Economics Textbook:' the response to the Keynes/Hayek video

I wasn't a big fan of the Keynes/Hayek video. Mostly as I noted before more than once (here, for example), because Hayek was not really that relevant in the history of economic ideas. Keynes was debating with Pigou and Robertson, that is, the marginalist tradition in Cambridge going back to Marshall. Hayek was dispatched early on by Sraffa. Oh well, here the response video.