Ad hominems that call to question the credibility of the argument's source are non-fallacious and thus perfectly valid in debate. https://en.wikipedia.org/wiki

Ad hominems that call to question the credibility of the argument's source are non-fallacious and thus perfectly valid in debate. https://en.wikipedia.org/wiki/Ad_hominem#Non-fallacious_reasoning https://en.wikipedia.org/wiki/Ad_hominem#Non-fallacious_reas...