This is my favourite ever thread on this forum!
OK, one at a time...
Kuma01 Wrote:Well I'm a biology student, so I'm inclined to take a rational approach when it comes to these things.
I think that's what we're all trying to do
IceCream Wrote:But these kinds of arguments seem much much less strong now in the face of the neurobiological understanding we have.
We may not know "how" parts of the brain, and the nervous system give rise to experience, but we certainly know that there are at the very least extremely strong correlations between one thing and another. We know what types of impairment occur from certain types of damage, and a whole host of things about the physical properties of the brain under different circumstances.
Well, it's quite possible that I'm behind the times here. I'm making an argument by attempting to rationalise from the information I have, but have made no attempt to keep up with the current literature. I read whatever comes into the major interdisciplinary journals and I've read books on the philosophy of mind by Daniel Dennett, John Searle etc. I've also read all of Oliver Sacks' books (so I'm familiar with the kinds of insights which can be gained from analysing impairments), but I am by no means completely up to date with philosophy of mind, neuropsychology or neurobiology. I asserted that we don't understand the physical basis of consciousness because it's been one of the biggest questions in science since the beginning, and I'm sure I would have heard about it if we'd had a major breakthrough
So, perhaps I should reconsider my position based on a more thorough understanding of current neurobiology. I'll delve into the literature and get back to this thread in a couple of months with a more thorough perspective. It may take me longer than that since I'm currently working out a PhD research proposal, for Cambridge Plant Sciences

, and it's consuming my entire being.
vileru Wrote:I don't think brain structures and nervous systems give the entire picture of how we attribute sensations to other humans. Language is key to this attribution, which is what I think Blahah is pointing at. Even assuming similar brain structures and nervous systems, we don't share a language with any animals in the same way that we do with humans.
Exactly, language is the crux of the difference. Language allows me to probe the similarities between myself and other humans far more deeply than I can with other species. In doing so I can see that solipsism is not practical or likely to be true when applied to other humans, but the fact that I can't even inquire of non-human minds is a big indicator of a large difference.
vileru Wrote:Therefore, there must be something other than suffering that is essential to what makes a life valuable.
Strongly agree. I have a great admiration for life, it's by far the most interesting phenomenon that's ever arisen (that I've come across), and to destroy something so complex and fascinating to investigate is abhorrent to me. I especially agree that whether or not something suffers is not a strong foundation for a moral decision about it.
Angeldust Wrote:Everything that lives and moves about will be food for you. Just as I gave you the green plants, I now give you everything.") So presumably before this humans were supposed to be herbivorous and only now does God give permission to eat meat.
Given how long ago the Bible was written, how do you apply your interpretation of it to the modern world? Do you think God would still give that same permission considering the pressures the world is under? What I'm getting at is, can your religiously founded view be swayed by modern events and science in a similar way to a non-Christian's?
nest0r Wrote:I'm baffled as to why you'd think that. It almost seems like a cop-out to be honest, like when people deny evolution because we haven't ‘perfected’ the theory. ;p We apparently need a YouTube video of evolution and the human and nonhuman experience of suffering in action before skeptics will be convinced?
There's a huge difference. We pretty much have perfected the theory of evolution, and the difference is that people arguing against evolution are either not understanding the concept or they have prejudged it to be false for religious/political/whatever reasons. It's not a cop out, and I'm not arguing that other species don't experience degrees of consciousness - I said earlier that they may well do, and I'm willing to be convinced in either direction about the suffering issue. I have just perceived the question as one of absolutes - if we (not you and I, others in this thread) are basing an ethical system on to what extent things suffer, we better damn well know they suffer. But like I said, I think it's a silly starting point for an ethical system, so my hardlining only holds in this context.
nest0r Wrote:Oh and if we're going to start repeating the outdated philosophies and their refrain about p-zombies and qualia that Dennett already did a good job refuting even before cognitive science came in and made the notion of qualia look positively silly, then there's no helping it, we'll have to agree to disagree. ;p
Well as I said to IceCream, I'm not up to date with the consciousness literature (being a plant biologist). I have heard of qualia and p-zombies, and have read Dennetts thoughts about qualia (though I didn't consider them a refutation). But I wasn't aware that this is considered outdated, so if you can point me in the direction of good review papers/books/lectures (or if you can't, I'll find some myself, but it seems to be your area) I'll get up to speed. Qualia are intuitively a part of my experience - perhaps the terminology or precise definition can be challenged but there would have to be a pretty hefty rational overturn for this to change.