"pretty ignorant of this guy since he doesn't have evidence either way, I won't hold my breath waiting for his evidence that there is no god"
HUH??? Why should someone require evidence of unsubstantiated claims in order to forsake the default position that an unsubstantiated claim is unsubstantiated??? If you tell someone that you (or "God" or Obama or whomever) can physically travel at the speed of light between New York and Los Angeles...why should anybody be criticised for disbelieving your claim until you offer some proof??? You do know the difference between something claimed to be true by somebody who cannot in any way justify the claim...and claims of fact accompanied and justified by evidence that rationally coheres.--don't you???
"I wonder if this guy could convince him."
On what possible basis??
Sam Harris makes it very clear that this account does not even approach any evidentiary validity or integrity. You gonna start rethinking Science every time somebody has a dream or a "vision"??? If it looks like a duck and walks like a duck and quacks like a duck...GUESS WHAT?
"...Everything—absolutely everything—in Alexander’s account rests on repeated assertions that his visions of heaven occurred while his cerebral cortex was “shut down,” “inactivated,” “completely shut down,” “totally offline,” and “stunned to complete inactivity.” The evidence he provides for this claim is not only inadequate—it suggests that he doesn’t know anything about the relevant brain science. Perhaps he has saved a more persuasive account for his book—though now that I’ve listened to an hour-long interview with him online, I very much doubt it. In his Newsweek article, Alexander asserts that the cessation of cortical activity was “clear from the severity and duration of my meningitis, and from the global cortical involvement documented by CT scans and neurological examinations.” To his editors, this presumably sounded like neuroscience.
The problem, however, is that “CT scans and neurological examinations” can’t determine neuronal inactivity—in the cortex or anywhere else. And Alexander makes no reference to functional data that might have been acquired by fMRI, PET, or EEG—nor does he seem to realize that only this sort of evidence could support his case. Obviously, the man’s cortex is functioning now—he has, after all, written a book—so whatever structural damage appeared on CT could not have been “global.” (Otherwise, he would be claiming that his entire cortex was destroyed and then grew back.) Coma is not associated with the complete cessation of cortical activity, in any case. And to my knowledge, almost no one thinks that consciousness is purely a matter of cortical activity. Alexander’s unwarranted assumptions are proliferating rather quickly. Why doesn’t he know these things? He is, after all, a neurosurgeon who survived a coma and now claims to be upending the scientific worldview on the basis of the fact that his cortex was totally quiescent at the precise moment he was enjoying the best day of his life in the company of angels. Even if his entire cortex had truly shut down (again, an incredible claim), how can he know that his visions didn’t occur in the minutes and hours during which its functions returned?
I confess that I found Alexander’s account so alarmingly unscientific that I began to worry that something had gone wrong with my own brain. So I sought the opinion of Mark Cohen, a pioneer in the field of neuroimaging who holds appointments in the Departments of Psychiatry & Biobehavioral Science, Neurology, Psychology, Radiological Science, and Bioengineering at UCLA. (He was also my thesis advisor.) Here is part of what he had to say:
This poetic interpretation of his experience is not supported by evidence of any kind. As you correctly point out, coma does not equate to “inactivation of the cerebral cortex” or “higher-order brain functions totally offline” or “neurons of [my] cortex stunned into complete inactivity”. These describe brain death, a one hundred percent lethal condition. There are many excellent scholarly articles that discuss the definitions of coma. (For example: 1 & 2)
We are not privy to his EEG records, but high alpha activity is common in coma. Also common is “flat” EEG. The EEG can appear flat even in the presence of high activity, when that activity is not synchronous. For example, the EEG flattens in regions involved in direct task processing. This phenomenon is known as event-related desynchronization (hundreds of references).
As is obvious to you, this is truth by authority. Neurosurgeons, however, are rarely well-trained in brain function. Dr. Alexander cuts brains; he does not appear to study them. “There is no scientific explanation for the fact that while my body lay in coma, my mind—my conscious, inner self—was alive and well. While the neurons of my cortex were stunned to complete inactivity by the bacteria that had attacked them, my brain-free consciousness ...” True, science cannot explain brain-free consciousness. Of course, science cannot explain consciousness anyway. In this case, however, it would be parsimonious to reject the whole idea of consciousness in the absence of brain activity. Either his brain was active when he had these dreams, or they are a confabulation of whatever took place in his state of minimally conscious coma.
There are many reports of people remembering dream-like states while in medical coma. They lack consistency, of course, but there is nothing particularly unique in Dr. Alexander’s unfortunate episode.
Okay, so it appears that my own cortex hasn’t completely shut down. In fact, there are further problems with Alexander’s account. Not only does he appear ignorant of the relevant science, but he doesn’t realize how many people have experienced visions similar to his while their brains were operational. In his online interview we learn about the kinds of conversations he’s now having with skeptics:
I guess one could always argue, “Well, your brain was probably just barely able to ignite real consciousness and then it would flip back into a very diseased state,” which doesn’t make any sense to me. Especially because that hyper-real state is so indescribable and so crisp. It’s totally unlike any drug experience. A lot of people have come up to me and said, “Oh that sounds like a DMT experience,” or “That sounds like ketamine.” Not at all. That is not even in the right ballpark.
Those things do not explain the kind of clarity, the rich interactivity, the layer upon layer of understanding and of lessons taught by deceased loved ones and spiritual beings.
“Not even in the right ballpark”? His experience sounds so much like a DMT trip that we are not only in the right ballpark, we are talking about the stitching on the same ball. Here is Alexander’s description of the afterlife:
I was a speck on a beautiful butterfly wing; millions of other butterflies around us. We were flying through blooming flowers, blossoms on trees, and they were all coming out as we flew through them… [there were] waterfalls, pools of water, indescribable colors, and above there were these arcs of silver and gold light and beautiful hymns coming down from them. Indescribably gorgeous hymns. I later came to call them “angels,” those arcs of light in the sky. I think that word is probably fairly accurate….
Then we went out of this universe. I remember just seeing everything receding and initially I felt as if my awareness was in an infinite black void. It was very comforting but I could feel the extent of the infinity and that it was, as you would expect, impossible to put into words. I was there with that Divine presence that was not anything that I could visibly see and describe, and with a brilliant orb of light….
They said there were many things that they would show me, and they continued to do that. In fact, the whole higher-dimensional multiverse was this incredibly complex corrugated ball and all these lessons coming into me about it. Part of the lessons involved becoming all of what I was being shown. It was indescribable.
But then I would find myself—and time out there I can say is totally different from what we call time. There was access from out there to any part of our space/time and that made it difficult to understand a lot of these memories because we always try to sequence things and put them in linear form and description. That just really doesn’t work.
Everything that Alexander describes here and in his Newsweek article, including the parts I have left out, has been reported by DMT users. The similarity is uncanny. Here is how the late Terence McKenna described the prototypical DMT trance:
Under the influence of DMT, the world becomes an Arabian labyrinth, a palace, a more than possible Martian jewel, vast with motifs that flood the gaping mind with complex and wordless awe. Color and the sense of a reality-unlocking secret nearby pervade the experience. There is a sense of other times, and of one’s own infancy, and of wonder, wonder and more wonder. It is an audience with the alien nuncio. In the midst of this experience, apparently at the end of human history, guarding gates that seem surely to open on the howling maelstrom of the unspeakable emptiness between the stars, is the Aeon.
The Aeon, as Heraclitus presciently observed, is a child at play with colored balls. Many diminutive beings are present there—the tykes, the self-transforming machine elves of hyperspace. Are they the children destined to be father to the man? One has the impression of entering into an ecology of souls that lies beyond the portals of what we naively call death. I do not know. Are they the synesthetic embodiment of ourselves as the Other, or of the Other as ourselves? Are they the elves lost to us since the fading of the magic light of childhood? Here is a tremendum barely to be told, an epiphany beyond our wildest dreams. Here is the realm of that which is stranger than we can suppose. Here is the mystery, alive, unscathed, still as new for us as when our ancestors lived it fifteen thousand summers ago. The tryptamine entities offer the gift of new language, they sing in pearly voices that rain down as colored petals and flow through the air like hot metal to become toys and such gifts as gods would give their children. The sense of emotional connection is terrifying and intense. The Mysteries revealed are real and if ever fully told will leave no stone upon another in the small world we have gone so ill in.
..."
samharris.org |
