Why it matters that humans are animals.

I have written numerous posts advocating that because humans are animals they should be recognized as such (for example, see here , here, here , and here). For zoologists and others who study animals, it is obviously true that we are animals. We do hundreds of things that the other mammals do, plus a few extra. You can see it every day when you eat, breathe, emote, poop, become fatigued and fall asleep. Yet millions of Americans are horrified by the thought that human beings are animals. Consider that we aren’t simply animals. Our species is a carefully defined type of animal. We are apes. Frans de Waal explains:

Darwin wasn't just provocative in saying that we descend from the apes—he didn't go far enough . . . We are apes in every way, from our long arms and tailless bodies to our habits and temperament.

If you want even more detail on what type of animal humans are (we are in the ape sub-division of primates), watch this brisk video by Aron-ra. Again, this sort of information is really disturbing to many people, especially religious conservatives. So why don't I simply leave religious conservatives alone? Why do I persist on standing on rooftops and proclaiming this message that humans are animals? Why don't I just whisper this sort of information only to my closest of friends: "Pssst. Human beings are animals." Why don't I just let it be, and keep it all to myself? What could possibly be at stake that I feel compelled to spread the word that human beings are animals? I was in the process of assembling my own list when I just happened to read Chapter 12 of Mark Johnson's new book, The Meaning of the Body: Aesthetics of Human Understanding. Johnson is well known for his work with metaphors and embodied cognition with George Lakoff. Chapter 12 of his new book contains a section that leaped out at me: "The Philosophical Implications of the Embodied Mind." In that short section, Johnson sets forth nine reasons why it really and truly matters for people to acknowledge that they are animals and to fully accept that their minds are embodied, not free-floating entities independent of physical laws. Johnson's biggest target is the "objectivist theory of meaning," the idea that meaning "gets defined without any connection to the experience of the creature (i.e., the human) for whom the words are meaningful. Johnson points out that those who follow the objectivist theory of meaning believe that words and sentences somehow "carry" meaning without even trying to explain how words and sentences ever come to acquire meaning. It should send up immediate red flags that the predominate theory of meaning relies on floating thoughts, a theory of meaning that is not biologically anchored. Reacting to (and rejecting) this objectivist approach, Mark Johnson premises his analysis "with a mind that is not separate from or out-of-ongoing-contact with its body and its world." His worldview includes a specific definition of body and his impressive list of why it matters for human beings to take seriously "the embodiment of mind and meaning." Here are those reasons (I will be borrowing liberally from Johnson's book with these descriptions, beginning at page 279):

Continue ReadingWhy it matters that humans are animals.

Computer souls

[A kitchen table conversation between a parent and a child]

Daddy, if my computer burned up in a fire, would it still compute? No, Mary. Programs don't simply run by themselves. They depend upon extremely complicated hardware and software. If your computer burns up in a fire, there would be no hardware and no software with which to run your favorite programs. But I've used my computer for a long time. I've grown emotionally attached to it. It makes me sad that it won't actually compute if it were to be destroyed. Doesn't my computer have a soul that continues running my programs somewhere else after my computer burns up on Earth? I'm sorry, Mary. There is no computer heaven and there is no computer soul. There is no evidence of either of these. But we can't prove that it won't keep computing after it burns up in a fire, right? No. Sorry, Mary. Without hardware and software, no computing will happen. The ashes of your burned up computer would lack any systematic structure. They certainly lack the complex organization required to run programs. It is impossible for any computation to occur without the hardware and the software intact. Your claim that a computer would keep computing even though it is completely destroyed is an extraordinary claim that would require extraordinary proof. We have no such proof whatever. But Lisa Jenkins says that burned up computers do keep computing. She says that you only need to have faith and that no one can disprove that burned up computers live on in a parallel world. She says destroyed computers keep working, but not in a physical way. She goes to a special building on Sunday where thousands of people all believe that computers keep computing even after they are completely destroyed. No, Mary. The same thing happens to computers as happens to your own body. As you know, when your body dies, your entire body rots, including your brain. As you know, when your brain is rotted, you don't have any more thoughts because there is no intact functional neural structure anymore, and therefore no basis for any continuing thoughts. Oh, daddy! It's not the same! Yes, I know that when my body dies, it will be impossible for me to think anymore. My computer is different, though. I just can't believe that my amazing computer would stop computing just because it gets completely destroyed! Don't try to compare my beautiful computer to a human brain! It's not a matter of what you want to believe, my child. It's a matter of what actually happens in the real world. You can continue using your computer for now and loving the way it works, but it would be unhealthy to believe that it would keep computing even if it was destroyed. As a parent, it's my job to level with you regarding difficult topics like this. I'm so sorry.

Continue ReadingComputer souls

How is high-speed high-volume inter-connectivity affecting our brains?

What happens to our brains when we sit at our computers for long periods of time interacting with the cyber world? This question was considered in an article called "Meet Your iBrain," appearing in the October/November 2008 issue of scientific American Mind. The authors cite a 2005 Kaiser family foundation…

Continue ReadingHow is high-speed high-volume inter-connectivity affecting our brains?

How well do old brains work?

This year's presidential campaign offers a choice between 72-year old John McCain and 46-year old Barack Obama.  This large difference in age provoked Christopher Beam of Slate to review the scientific literature comparing the function of old brains versus younger brains.  Here are a few things to contemplate, assuming your…

Continue ReadingHow well do old brains work?