As far as the notion of "practice before theory", Marx's second Thesis on F, proposes that practice is the test of theory. This would imply "theory before practice", as the Activistism thesis implies.
It seems more sensible that there would be an ongoing reciprocity between them - ...theory-practice-theory-practice...
Practice tests theory for its truth value in this epistemological precis by Marx. The 11th thesis declares the ultimate purpose of Marx's project is to change the world. Philosophers have interpreted the world in a number of ways; the truth test by practice , presumably determines which interpretations by philosophers, artists, scientists, intellectuals, predominantly mental laborers are true, and thereby the best basis for changing the world. So, in the "end", successfully changing the world is simultaneously proof of the truth of the theory or interpretation used, and it is the "thing", the achievement of the goal, the purpose of the Marxist philosopher/intellectual's whole project.
Charles
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