Wednesday, February 18, 2015

Mind Boggling Silence

There are two basic views (and some sub-categories of each) about how to understand the relationship between the brain and the mind. The first, physicalism, says that the mind is nothing more than an extension of the brain. The second, dualism, says that the mind and brain are different things altogether.

Physicalism insists that there is no difference between the mind and the brain -- that the "mind" is simply a way to refer to the results of chemical processes that go on in the neural network controlled by the gray matter between your ears.
"According to strict physicalism, a human being is merely a physical entity. The only things that exist are physical substances, properties and events ... The physical substance called the brain has physical properties such as a certain weight, volume, size, electrical activity, chemical composition and so forth ... when someone has an occasion of pain or an occurrence of a thought, physicalists hold that these are merely particular physical events -- events where certain C-fibers are firing or certain electrical and chemical events are happening in the brain and central nervous system."*
Since thoughts and feelings are nothing but physical events that result from electrical impulses between neural cells, we can actually connect electrodes to the brain, stimulate it in different ways, and observe which area of the brain "lights up." We can manipulate that area of the brain with surgery or chemicals and thereby alter behavior, or at least understand what made you act the way you did when you felt sad, or angry, or happy, or attracted to a mate.

Once we know where our different behaviors and inclinations reside, we are well on our way to solving all the mysteries of the origin and operation of imagination, concepts, thoughts, instincts, and morality. Since these are nothing but different kinds of chemical reactions, and "free will" is really nothing but an illusion about the responses the chemicals in your brain have to various inputs from physical events that preceded the actions you take, neuroscientists like will soon be able to explain and control each of them.

You are your brain and your brain is a computer made of meat.

With that in mind, meet Dr. Patricia Churchland. Churchland is one of the leading philosophers of neuroscience in the world. This means that her work focuses on philosophical questions about how consciousness relates to brain function. Listen to Dr. Churchland explain some exciting new discoveries and implications of neuroscience:



Very interesting stuff.

However, it's one thing to go on The Colbert Report and cite scientific research about oxytocin to a comedian and his audience. It's quite another thing to have to answer philosophical questions about your research to someone who actually knows how to ask them. You see, each of the phenomena Dr. Churchland talked about here are examples of correlation -- that certain actions and/or traits that we observe "correlate" to neurons firing in a specific location in the brain. No argument there.

The problem is that, as any scientists knows, correlation does not equal causation.

Just because we can correlate these things does not mean that one of them caused the other. To put it another way, smoke correlates to fire quite nicely, but that does not in any way mean that the smoke caused the fire.

The problem with physicalism is that there doesn't seem to be a way to reconcile the physical stuff we can observe going on in our brains with things like the thoughts, desires, plans, and intentions that make those things occur. In fact, when scientists perform the studies that correlate brain activity in certain areas of the brain with the thinking that correlates to that activity, they have absolutely no way to know what the subject of the study is thinking when the neural networks are firing -- unless, of course, they ask. In other words, neuroscientists can hook electrodes up to your brain all day long, but they can never know what you are thinking ... unless you tell them.

You, it seems, are something different than your brain.

So what about Dualism? This is a view of the relationship between mind and brain which holds that the brain is actually a different "substance" (philosophically speaking) that is not physical but that somehow interacts with the physical brain. This view would be compatible with the idea of the soul (the mind being some kind of subset of the soul) and offers a way to make sense of several phenomena we observe about human beings that, frankly, make no sense otherwise. Without getting into details (I will do that in a follow-on post), some of these things include: continuity of self, free will, agent causation, breakthroughs in the study and treatment of obsessive compulsive disorder, and near death experiences.

To be fair, no one is claiming to be able to explain exactly how this interaction takes place but it does seem to offer a way to make sense of several different phenomena that we observe and to also be perfectly consistent with the existence of the non-physical reality of the "self."

So, back to Dr. Churchland. What happens when she is forced to defend her physicalist view of the mind/brain problem against someone who not only knows the flaws in that view, but who can cite reliably qualified sources that completely contradict what Dr. Churchland can get away with saying on The Colbert Report? What happens when those sources include blatant misrepresentations of the work of others which have been made by Dr. Churchland herself? Watch and see ...



Maybe the fact that we can hear background noise from Dr. Churchland's end of the line while she claims the connection isn't working is the result of some kind of out-of-body experience that can only be understood by doctors of neuroscience. And maybe "the dog ate my internet connection" is an acceptable way to defend the physicalist view of the mind/brain interface to those who dare not question it. But, for those with minds that are open to whatever the truth happens to be true regarding the existence of non-physical realities like the soul, the mind, and God himself, this interview is truly something to behold.

Sometimes silence really is golden.

__________________

* J. P. Moreland, The Soul: How We Know It's Real And Why It Matters, p. 25

Monday, February 16, 2015

Ant That Somethin'?

If someone were to ask you what land dwelling creature possessed the greatest total mass on Earth today, I'm betting the word "ant" would not come to mind. According to Hugh Ross, "the ubiquitous ant comprises 15-25% of the total mass of living animal tissue on the continents ... [not only that but] both the ants' population size and behaviors have helped compensate for the Sun's increasing luminosity over the 3.5 billion years since life originated on the Earth."
 
Here's how.
 
The Sun, like any other star, is basically a nuclear furnace that emits heat and light from the continuous fusion of hydrogen into helium at its core. As this process becomes more efficient over the life of the star, it brightens. In fact, astronomers have calculated that our Sun burns 25% brighter today than it did 3.5 billion years ago.
 
"So what?"
 
Scientists also calculate that a mere 1-2% increase in the brightness of the Sun is enough to burn the Earth and render it uninhabitable for life. Yet, here we are.

Enter, ants.
 
It turns out that one of the many curious design features of our "Privileged Planet" is the delicate balance that has been maintained in the Earth's atmosphere as the Sun has progressively brightened. The Earth's ecosystem has simultaneously managed, through the combined efforts of organismal and geological processes, to compensate for the Sun's increased luminosity by removing heat-retaining gases from the atmosphere to maintain a livable temperature on the surface of the Earth.
 
According to Ross:
"weathering of silicates (silicon compounds) is the most effective way living creatures remove greenhouse gases. In this process, atmospheric carbon dioxide reacts with rainwater to make carbonic acid that, in turn, reacts with continental silicates to yield sand and carbonates. Depending on the life-forms involved, more or fewer continental silicates are exposed to rainwater and more or less carbon dioxide is removed from the atmosphere. Recently, a geologist discovered that ants may well be the latest major contributors to atmospheric carbon dioxide reduction.
During the Paleogene Era (66-23 million years ago), many new ant species emerged, greatly expanding their total biomass. Field studies establish that the weathering of calcium and magnesium silicates is enhanced by a factor of 50-300 times in the vicinity of ant colonies. Thus ants indirectly played a significant role in making it possible for life to persist [Yon the Earth]."*
I'm not trying to make a mountain out of an ant hill, but this is just one of many such design features that we find in the interwoven characteristics of our Solar System -- as well as in the delicate design of the Sun-Earth-Moon system that holds eerie "coincidences" that have to be just the way they are for life to be possible on the Earth. You can read more about these kinds of things in several of Hugh Ross's writings, as well as in "Privileged Planet ," by Jay Richards and Guillermo Gonz├ílez (also available in video form at discovery.org).
 
It seems to me that it ought to make even the most serious skeptic pause to consider how it could be possible to establish and discover such a connection between the physics of nuclear fusion at the core of the Sun and the compensatory design features of plants ... and ants ... on the Earth.
 
I would never go so far as to say that the ant connection is a serious "proof" for the existence of God, but it is certainly consistent with the Design Argument for God ... especially when you consider that it is just one among many, many similar "coincidences."

I offer it for what it's worth ...

__________________

* This quote and the general idea of the post are based on the article, "Ants: Amazing Agents of Change," by Hugh Ross, Reasons To Believe Newsletter, January/February 2015.