The mere title of this thread begs the "mulberry bush" question. You self-professed principled proselytizers toss out your propaganda with a warning to those of us still using our brains that you don't want to hear "that old argument" again. Well, then don't start the argument. Pretending you're not, by tossing out a hypothetical impossibility, is transparently insulting. So what else is new? Your (and here I mean the Libertarian Party functionaries who control this website) campaign style is either naïve or tactically challenged. I can't imagine many thinking folks are much persuaded by the monotonal more-principled-than-thou approach that failed the intellectual Socialists, as well.
I promised elsewhere on this site that I would refrain from starting any "mulberry bush" discussions. But I also noted that if one of the Party functionaries or fellow travelers starts one, I'll jump right in and add my POP. I've been accused of "attacking" the Party. Not true. That would be like punching a tar baby. I only try to rebut monotonal condescensions.
I'd consider joining the Party -- after the November elections, of course -- but first I'd need to see evidence of enlightenment among the leadership. Principles are cute, granted, but wisdom is beauty.
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Idiot, n. A member of a large and powerful tribe whose influence in human affairs has always been dominant and controlling. -- Ambrose Bierce