Known as “Mad Max” for his unorthodox ideas and passion for adventure, Max Tegmark’s scientific interests range from precision cosmology to the ultimate nature of reality, all explored in his new popular book Our Mathematical Universe. Tegmark is a professor of physics who has published more than two hundred technical papers and been featured in dozens of science documentaries. His work with the Sloan Digital Sky Survey on galaxy clustering shared the first prize in Science magazine’s “Breakthrough of the Year: 2003.” For more information about his work, please visit his MIT website and the Future of Life Institute.
It seems increasingly likely that we will one day build machines that possess superhuman intelligence. We need only continue to produce better computers—which we will, unless we destroy ourselves or meet our end some other way. We already know that it is possible for mere matter to acquire “general intelligence”—the ability to learn new concepts and employ them in unfamiliar contexts—because the 1,200 cc of salty porridge inside our heads has managed it. There is no reason to believe that a suitably advanced digital computer couldn’t do the same.
It is often said that the near-term goal is to build a machine that possesses “human level” intelligence. But unless we specifically emulate a human brain—with all its limitations—this is a false goal. The computer on which I am writing these words already possesses superhuman powers of memory and calculation. It also has potential access to most of the world’s information. Unless we take extraordinary steps to hobble it, any future artificial general intelligence (AGI) will exceed human performance on every task for which it is considered a source of “intelligence” in the first place. Whether such a machine would necessarily be conscious is an open question. But conscious or not, an AGI might very well develop goals incompatible with our own. Just how sudden and lethal this parting of the ways might be is now the subject of much colorful speculation.
Meditation and the Nature of the Self A Conversation Between Sam Harris and Dan Harris at the Rubin Museum
I’d like to begin, once again, by congratulating Ryan Born for winning our essay contest. The points he raised certainly merit a response. Also, I should alert readers to a change in the expected format of this debate: Originally, I had planned to have an extended conversation with the winning author, with Russell Blackford serving as both moderator and commentator. In the end, this design proved unworkable—and it was not for want of trying on our parts. I know I speak for both Ryan and Russell when I say that our failure to produce an acceptable text was frustrating. However, rather than risk boring and confusing readers with our hairsplitting and backtracking, we’ve elected to simply publish Russell’s “Judge’s Report” and Ryan’s essay, followed by my response, given here.—SH
I am often asked what will replace organized religion. The answer, I believe, is nothing and everything. Nothing need replace its ludicrous and divisive doctrines—such as the idea that Jesus will return to earth and hurl unbelievers into a lake of fire, or that death in defense of Islam is the highest good. These are terrifying and debasing fictions. But what about love, compassion, moral goodness, and self-transcendence? Many people still imagine that religion is the true repository of these virtues. To change this, we must begin to think about the full range of human experience in a way that is as free of dogma, cultural prejudice, and wishful thinking as the best science already is. That is the subject of my next book, Waking Up: A Guide to Spirituality Without Religion.
I’d like to thank you for taking the time to review Free Will at such length. Publicly engaging me on this topic is certainly preferable to grumbling in private. Your writing is admirably clear, as always, which worries me in this case, because we appear to disagree about a great many things, including the very nature of our disagreement.
I want to begin by reminding our readers—and myself—that exchanges like this aren’t necessarily pointless. Perhaps you need no encouragement on that front, but I’m afraid I do. In recent years, I have spent so much time debating scientists, philosophers, and other scholars that I’ve begun to doubt whether any smart person retains the ability to change his mind. This is one of the great scandals of intellectual life: The virtues of rational discourse are everywhere espoused, and yet witnessing someone relinquish a cherished opinion in real time is about as common as seeing a supernova explode overhead. The perpetual stalemate one encounters in public debates is annoying because it is so clearly the product of motivated reasoning, self-deception, and other failures of rationality—and yet we’ve grown to expect it on every topic, no matter how intelligent and well-intentioned the participants. I hope you and I don’t give our readers further cause for cynicism on this front.
Unfortunately, your review of my book doesn’t offer many reasons for optimism. It is a strange document—avuncular in places, but more generally sneering. I think it fair to say that one could watch an entire season of Downton Abbey on Ritalin and not detect a finer note of condescension than you manage for twenty pages running.
Daniel Dennett and I agree about many things, but we do not agree about free will. Dan has been threatening to set me straight on this topic for several years now, and I have always encouraged him to do so, preferably in public and in writing. He has finally produced a review of my book Free Will that is nearly as long as the book itself. I am grateful to Dan for taking the time to engage me this fully, and I will respond in the coming weeks.—SH
Daniel C. Dennett is the Austin B. Fletcher Professor of Philosophy, and Co-Director of the Center for Cognitive Studies at Tufts University. He is the author of Breaking the Spell, Freedom Evolves, Darwin’s Dangerous Idea, Consciousness Explained, and many other books. He has received two Guggenheim Fellowships, a Fulbright Fellowship, and a Fellowship at the Center for Advanced Studies in Behavioral Science. He was elected to the American Academy of Arts and Sciences in 1987. His latest book, written with Linda LaScola, Caught in the Pulpit: Leaving Belief Behind.
This essay was first published at Naturalism.org and has been crossposted here with permission.
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