Good website.

Thank you very much. The sociopath argument has become tiresome and your reply is useful. I appreciate it.

I think the inference is related to an incorrect impression that someone who applies reason to all of their choices is lacking in emotion and therefore empathy. I generally just call ad hominem and ask why they are not willing to discuss the ideas. Stay on topic. If you address the definition of sociopath and argue it rationally, they have succeeded in their goal. But for your purposes, a sociopath lacks a sense of morality. Rand wrote extensively on Ethics and morality in developing her philosophy of Objectivism. A sociopath behaves irrationally. Well, as you know, an axiom of Objectivism is Reason and therefore, a sociopath does not act in their rational self interest. btw, I've seen that ad hominem used not only by leftists but also the religious right. Her detractors realize how powerful her ideas are.

http://www.aynrandmyths.com/