The Framers of the Constitution and Technological Progress

Codrea has a thought-provoking article that debunks the argument that the authors of the Bill of Rights couldn't have anticipated the technological progress that brought us machineguns and the like.  (I've always liked the counterargument that if that's the case, then the First Amendment protections on freedom of speech only apply to quill pens on parchment or old-school printing presses a la Gutenberg.)  Pepperbox revolvers (multi-shot revolvers in those days), volley guns (also multi-shot guns), and Puckle guns (a Gatling-gun type contraption, aka a hand-crank machinegun)?  Plenty of multi-shot and, indeed, rapid-fire technology existed.  Those anti-gunners are full of shit!