Is there a difference between Apriori and Axioms? Thanks, Drake. Combined with some other glances at the difference between apriori and axiom, your post helped this all sink in a little better.
I think it is appropriate to label Hoppe's argumentation as the a priori of argumentation. It's also axiomatic, but I'm thinking that axioms are the starting point of deductive reasoning, no matter how insane the prospects of that deduction.
In other words, all a priori truths are axiomatic, but not all axioms are a priori. That's where my head is at the moment.