by denegro on 04/9/2011

An ad hominem attack is not quite as weak as mere name-calling. It might actually carry some weight. For example, if a senator wrote an article saying senators’ salaries should be increased, one could respond:

Of course he would say that. He’s a senator.
This wouldn’t refute the author’s argument, but it may at least be relevant to the case. It’s still a very weak form of disagreement, though. If there’s something wrong with the senator’s argument, you should say what it is; and if there isn’t, what difference does it make that he’s a senator?

Paul Graham — How to disagree