How about primarily 4 but with influences from 5 and 6; and 1, 2, and 3 (and possibly 4 depending on what is meant by "existential"--but no to the irrationalism of Kierkegaard and the likes, in any case), in supplemental, later work (such as after a presuppositional groundwork has been set, perhaps in an "ad hominem" of the opponents view as Clark called it).

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Patrick Arnold
Covenant OPC, Brighton, MI
MA student in philosophy at the University of Michigan