When I see "ad hominem" hauled out on HN, I always think of the following from Daniel Davies: "There is much made by people who long for the days of their fourt

When I see "ad hominem" hauled out on HN, I always think of the following from Daniel Davies: "There is much made by people who long for the days of their fourth form debating society about the fallacy of "argumentum ad hominem". There is, as I have mentioned in the past, no fancy Latin term for the fallacy of "giving known liars the benefit of the doubt", but it is in my view a much greater source of avoidable error in the world."