have you read the General Theory of Employment Interest and Money?
directly from the book:
"THE outstanding faults of the economic society in which we live are its failure to provide for full employment" -from the chapter: Concluding Notes on the Social Philosophy towards which the General Theory might Lead
Keynesian economics focuses on full employment and income distribution as the primary failings of classical economics. In attempting to address these two non-problems keynes introduced blatant scientism into economic discourse.
I know that Keynes cares a lot about full employment. But you said he introduced it as a concern. Do you have sources that nobody cared about it before?
the only pre-keynes material I have been able to find is keynes' ideological predecessor Jeremy Bentham.
Keynes is the one who popularized the approach and introduced policies that were actually adopted by government. control over monetary expansion to the degree that is required wasn't possible until the Federal Reserve was established.
When I say that keynes created the fetish of full employment, I mean that post-keynes it was a continuing concern of government, whereas pre-keynes it had not been.