I think he was using an appeal to nature fallacy to justify his speciesism. Either that we're evolutionarily hard-wired to prefer our own species, or that it's more evolutionarily advantageous to do so.Volenta wrote: Why do you think it's an appeal to natural fallacy by the way?
Even if we explain it, there's a good chance he still won't understand it.Volenta wrote: Without rebutting this one, everything goes. Maybe he heard of speciesism, but he doesn't understand it, otherwise he surely would agree (he might be confused like Sam Harris also is). It clearly shows that he doesn't understand it because of his point about extending human rights to non-human animals. He thinks it doesn't make sense, and that's probably because he's thinking about rights like the right to vote. From that it follows that he doesn't understand how rights should be ascribed (should also be noted that rights isn't really a thing in consequentialist ethics). So I think there need to be some clarification on what it actually is.
I'd rather focus on things that he clearly can understand, and that we can draw a parallel to with regards to his criticism of others to demonstrate hypocrisy. If we don't have a clear parallel to speciesism in his criticism of religion or other woo, I think it will be a weak argument in his mind.
Note before, where I said it doesn't matter how good your arguments are; it's the effect that matters. Unfortunately, sometimes you have to leave your best and most consistent arguments on the bench because people simply won't understand them or won't see why they should care about them.
The point about rights not really being a thing is a good one; I think that's something that most vegans also don't understand. Rights are human constructs that can be useful for a variety reasons, but aside from their consequences are ethically irrelevant. That's one reason I wouldn't bring them up now though; it's possibly too confusing for him.
However, there is a chance that explaining that to him will make things less confusing. It depends on how we do it, I suppose.
This is an important point, but I think it may be one he already understands.Volenta wrote: In the case of suffering, you can make a really good case about why it's so important to try to avoid it. Most people don't know that pain is mainly processed in ancient brain structures and not in the neocortex (which is big in humans), and thus the interest of avoiding pain should be taken (approximately) just as serious as to avoid pain in humans.
It's worth mentioning, I think, after the two main points, I'm just not sure it's useful as a major point because either he already gets it, or he may not understand it even now.
That may be. I just caught that as the main point to dissent with, because it was so blatantly hypocritical.Volenta wrote: Not only that, but I also got the impression that this is his main defense for continuing to eat animals. I don't think he's a meat eater because he thinks it's healthy to do so. That's more of a side note.
But this point, particularly if you think it's his main point (I took this as a "by the way"), could be very important too, and also has a strong element of hypocrisy to it.
I think these two points, side by side, should make up equal parts, and maybe 2/3 of the article. They will be the strongest arguments, because those are the ones that are personally relevant, since he has been demonstrably hypocritical on those.
The last part of the article should probably be a rapid fire list of points (really short and simple, with references). Things that either he already knows and needs to be reminded of, or if he doesn't and already ignores won't be very useful since he will dismiss them as he has done in the past.
E.g.
Speciesism
Rights
Global warming (and effects on humans)
Kind of like a "and here's all the other stuff you're wrong about or are ignoring, but haven't necessarily been overtly hypocritical on"