> is basically an ad-hominem. Argue the merits, not the source. It's not always ad-hominem. It might seem so because of the obvious tone used but at certain ti

> is basically an ad-hominem. Argue the merits, not the source. It's not always ad-hominem. It might seem so because of the obvious tone used but at certain times it could just be that the context that a person is coming from could have a really significant impact on his reasoning (for or against).