That is helpful, but its not dispositive - and that is my point. If you read the Constitution it says "we the people" not "we the framers" or "we the people who wrote this document and/or who wrote about supporting or opposing it." Why should anyone concerned about jurisprudence try to adopt a method that only takes into account those who actually wrote something about it and whose writings have actually survived?
And, of course, it doesn;t help in solving (or getting out of) the dilemma I posed.