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Imagined Worlds (Jerusalem-Harvard Lectures)

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Freeman Dyson is one of the most respected physicists and futurists in the United States. In this captivating book, based on a set of lectures he gave at the Hebrew University of Jerusalem in 1995, Dyson explores possible futures in science, technology, evolution, and ethics. He argues that science and technology are offering the human race a myriad of exciting prospects, but that there are enormous challenges in harnessing them effectively. For example, he characterizes much of our most celebrated scientific and technological accomplishments as "ideologically driven" and therefore of lesser long-term value than intended. While they might boost national pride, they are too expensive and benefit too small a community to have significant effect on humanity. Ideologically driven technologies, furthermore, tend to leapfrog the type of rigorous experimentation so valuable in creating spin-off technologies of benefit to all.

Dyson is at his best when analyzing the ethical dimension of these technologies and what they portend for the future. Dyson offers this assessment: "Many of the technologies that are racing ahead most rapidly, replacing human workers in factories and machines, making stock-holders richer and workers poorer, are indeed tending to accentuate the existing inequalities in the distribution of wealth" (pp. 181-82). An object lesson is the proliferation of computer technology and the Internet. According to Dyson, since the poor have access neither to computers nor the Internet, and since jobs are increasingly being advertised on-line, they now no longer have access to many jobs. In this context, Dyson cries out for a commitment to social justice that would help mediate the widening gap between rich and poor. He also suggests that in the United States the commitment to "free market capitalism" is an ideology that has driven much technological development, playing as it does to the elites who can afford the technologies, to the detriment of humanity as a whole. It is a pointed, well-meaning warning for the future.

Dyson also seeks to look into the distant future, offering a fascinating portrait of what he calls the "seven ages of man." Here Dyson looks ahead at several levels, from ten years to infinity. First, looking out ten years he sees a time-scale with which are all familiar and one that dominates everyone's planning. In that decade we will see the rise of biotechnology and other breakthroughs just becoming a part of civilization's consciousness. Second, he looks out one hundred years and suggests that we can reasonably extrapolate from what is presently taking place. Here he sees humanity moving outward into space and grappling with numerous environmental issues on Earth. Third, one thousand years in the future humanity will have populate the Solar System and probably our corner of the Milky Way. But neither politics nor technology is predictable. Fourth, at ten thousand years Homo Sapiens will have evolved into a variety of subspecies or perhaps ceased to exist at all. Fifth, at one hundred thousand years we can only speculate on an entirely different civilization than anything imagined today. Sixth, at one million years in the future Dyson asks questions about life and its quality but is totally nonunderstandable to us. Seventh, Dyson explores the nature of infinity and the death of universe.

What does the future hold? No one knows for sure but Freeman Dyson offers a compelling set of possibilities in "Imagined Worlds." He quotes from Samuel L. Gompers, founder of the American Federation of Labor, that this is what should happen in the future:
"We want more school houses and less jails,
More books and less guns,
More Learning and less greed,
More justice and less revenge,
We want more opportunities to cultivate our better nature" (p. 177).

Dyson believes this is fully achievable. If we can imagine it, we can accomplish it. This is a most uplifting and challenging read. Enjoy!

Freeman Dyson is an English American Physicist. His book, "Imagined Worlds" was borne from a series of lectures given in 1995. Throughout it's short 208 pages, Dyson has written a collection of insights into the possible futures for science and technology, and while easily accessible to a broad spectrum of readers it remains intellectually stimulating and thought provoking

Spawned from a truly remarkable imagination, some of those futures stretch far into timescapes populated by descendants who may be as unrecognizable to us as we might be to them. Where humankind has spread itself throughout the galaxy and joined in an alliance with other sentient beings. In the not so distant future, Dyson envisages the human colonization of Mars, DIY genetics where a child may be able to design their next pet, and how humankind (and animals) might one day be networked together at the mental level using a technology he calls "radio-telepathy".

Dyson has also included the past as an example of how we can begin to plan for these fantastic futures, emphasizing how the most successful technologies have started with humble beginnings and why a lot of the big, government sponsored, ideologically driven science is usually destined to failure. He effectively employs historical instances to illustrate his point.

From the disastrous failure of the British Airship the R101, the similarly inspired and equally calamitous BOAC Comet, through to the environmental nightmare that was (and still is!) Chernobyl. All were the result of the `Napoleonic' or politically driven technologies.

Numerous historical examples are supplied to also demonstrate how "Tolstoyan" technologies, shining ideas brought to life in garages, backyards or small labs with lean funding and scarce resources are the source of the great majority of breakthroughs. One such example validates this by pointing out that a lot of the groundwork done in the field of particle physics was accomplished with improvised devices by a dedicated group of scientists. Now with drastically reduced funding, he proposes that this is the way forward for future discoveries and applications.

Most notably, his guidelines stress the importance of science as a vehicle to provide for the wellbeing of all peoples, not only a select few. Additionally while we must be ever watchful of the unethical or immoral applications of new technologies, we are also to be careful not to shackle human self-improvement with ignorance and fear.

I always enjoy Freeman Dyson's books and essays, mostly because he is always willing to tackle the big questions in science and society. Not for him the pedestrian, the cynical, or the immediate--always the long view, with a certain passionate feeling for the possibilities of progress. His writing is refreshing and mind-expanding.

I especially enjoyed his discussion of early aviation, and the account he gives of the engineer, Nevil Shute Norway, one of my favorite authors of all time. The Darwinian perspective of the evolution of an artifact, the airplane, is right on, and one is tempted to see the phenomenon in other developing technologies as well.

The book is short, and is easy to read, especially considering the lofty ideas it contains.

There is little more fascinating then reading the thoughts of great minds. Dyson has seen and done much in his lifetime, and the chance to receive some of his wisdom should not be passed up.

This is a collection of ideas and thoughts (taken from a set of lectures), that cover a lot of ground, but are loosely based around the impact of science on society, how it can be abused when misused, but more importantly, some of the opportunities it offers us for the future if we use it well.

My only criticism on this book is its shortness. At just over two hundred rather spaced out pages, there is sadly a shortage of content, which is a great shame since Dyson clearly has a lot of ideas worth sharing. But I suppose that these are the ideas he wants to share the most, and by keeping it brief, he allows us to focus on them better, without being sidetracked by less important information.

While readable by just about anyone, those with some basic familiarity with science will get more out of it, while scientists will probably appreciate it even more. This book is more about the application of science then science itself, so understanding the science in it allows the reader to concentrate on what Dyson really wants to say.

Throughout his long career as a physicist, Freeman Dyson has always had a unique gift for elegantly summing things up. He was once a whisker away from winning the Nobel Prize for his brilliant reconciliation of Feynman's and Schwinger's theories of quantum electrodynamics (they gave it to Tomanaga instead) -- but today he is probably best known for his books of thoughtful and wide-ranging essays. In the tradition of his earlier works, this slim volume meditates upon the consequences of science and technology -- and sometimes reaches unexpected conclusions. Unfortunately, where he once discussed capturing the energy of stars within "Dyson Spheres" or details about interstellar travel -- he now restricts his speculation to rather banal warnings about the social consequences of technology and suggests that in the future children might design their own pets using a computer. I found many chapters --particularly the one concerning evolution -- to be elegant reading, but I still prefer his first book written over twenty years earlier -- "Disturbing the Universe."

--Auralgo

Freeman Dyson is a world famous physicist but his range of interests are rather wide: this book deals with evolution of technology, evolution itself, asteroid defense (Armageddon makers have not read this book), colonization of space, time scales in cosmology etc. These stories seem to be a bit unconnected but everyone of them is nice as a separte story. This should be marketed as airport non-fiction: easy reading (and very short) but full of original ideas.

Not a bad book. A bit rambling, but has some good stuff in it. It just shows its age too much - and the title is profoundly misleading: nothing to to with Imagined Worlds. It's all about how scientific progress looked like in the early 1990s. These days, of interest for historians of science only. Freeman Dyson has many recent, thought-provoking essays out there in the web for free. Read those instead.

The most engaging scientific writers (personal favorites include E.O. Wilson, Primo Levi, and Roald Hoffman) are not only masterly at sharing their field of study with you, but also enrich it with broader connections to art, history, and literature. Dyson does the same in Imagined Worlds, a collection of essays based on his lectures from the 1995 Jerusalem Harvard series. In it he explores the interplay of science, technology, and human evolution, as well as their futures and the important role ethics plays in relation to them. Along the way he speculates on everything from radiotelepathy and genetically engineered pets to Martian potatoes, which makes for some imaginative (and prescient) reading.

Dyson opens with a short story about his uncle, a German doctor whose greatest loves were his house and garden, which he lived in and kept throughout his entire life. He witnessed numerous political powers come and go, from the imperial to the communist, and developed a long term perspective of things, illustrated by his decision to cut down a magnificent oak tree in his garden. Dyson recalls how this decision shocked him - the tree looks healthy. He then learns that it is actually past its prime, and his uncle is thinking ahead for the sake of his grandchildren, who will inherit the house. He must kill the tree and plant a new sapling because "That tree would last my time, but it would not last theirs. I will plant a tree that they will enjoy when they are as old as I am now." The message? Look beyond the here and now. Consider the future. Dyson takes a similar long view in his writing.

The chapters on science and technology explore how each progresses, and how they have (and will) in turn change our world, for good and for bad. Technological evolution is a Darwinian process, Dyson writes, where inventions driven by practicality are more likely to survive than those pushed by ideology, which are almost always doomed. He illustrates this with a fascinating story of early 20th century aviation. Its empire in decline, Great Britain attempted to regain its former glory with impressive airships like the R101 and jetliners like the BOAC Comet. Political motivations and timetables dictated their development, however, and the new inventions were pushed into use untested. The predictable results when the politicians do the thinking instead of the engineers, when designing things meant to fly at high altitudes and great velocities: devastating crashes and tragic deaths.

He presents other similar ideologically driven cases, and his comments on nuclear power in particular call to mind the recent bailouts of the Detriot automakers and financial institutions deemed too big to fail: "There is nothing wrong...with using nuclear energy...But the rules of the game must be fair, so that nuclear energy competes with other sources of energy and is allowed to fail if it does badly...But the characteristic feature of an ideologically driven technology is that it is not allowed to fail." It also makes you wonder how the push for green energy here in America will pan out.

Dyson highlights a central message throughout Worlds- the disruptive power of technology must be tempered by ethics if we are to progress as a species. Early in the book he invokes H.G. Wells' The Time Machine as a cautionary tale where technology, unchecked by any ethical guidance, has not only widened the gap between rich and poor, but sent them down drastically divergent evolutionary paths. The results are the dehumanized, monstrous Morlocks and their prey the helpless, indolent Eloi. It's a lose-lose situation for everyone. Later, he echoes J.B.S. Haldane, who argued that technology tends to "change good to evil". When Dyson starts to explore the potential for genetic engineering (biology will be the 21st century's parallel to 20th century physics, he predicts) and considers how technology could shape human evolution, you start to consider how important a.

The final chapter, "Ethics", begins with a message from Samuel Gompers, the father of the American Labor movement: "We want more schools and less jails, more books and less guns, more learning and less vice, more leisure and less greed, more justice and less revenge, we want more opportunities to cultivate our better nature." If we can meet these needs through technology, Dyson writes, we can all prosper. If not, if technology benefits only the privileged, widening the existing gaps, the inevitable repercussions will harm all of us. In the end, "Worlds" seems to be more about us, and what we do with science, than just science itself. As we acquire more and more control over our destiny as a species through technology, how we steer our course becomes more and more important.

I highly recommend the book. Dyson is knowledgeable, conversational, and thought-provoking as he invites us to consider where we have been as a species, where we are right now, and where we are going.

Fereeman Dyson (of the infamous "Dyson" sphere fame) has long had a foot in two worlds - physics and science fiction. He has stated, perhaps correctly, that the latter can reveal truths better than the former. The reader should know that IMAGINED WORLDS is actually a compendium of a series of talks given at Hebrew University so it cannot be read in the same vein as other science books. Think of a less-developed THE VARIETIES OF SCIENTIFIC EXPERIENCE, the series of lectures by Carl Sagan.

Dyson's concerns are many - displacement of humans, gross inequality, directions of science and in particular, he cautions us repeatedly to beware ideological science, quests driven by politics, traditional science, religion or consumerism. These ventures take on a life of their own, especially political science with its unholy trinity of State power, funding and lobbying. He points out the nuclear fusion fiasco as an example of ideologically driven science. Perhaps a better example would be the history of the beginnings of the Human Genome Project when government scientists savaged Craig Venter for a new approach and most importantly, a newly discovered methodology that did nor require billions in elaborate grants.

Then there are the visions of the future. These are, by definition, only fuzzy approximations, with jumps of 10, 100, 1000, 10,000, etc years into the future. His 10-year forecast was both right and wrong for the best of reasons. The aforementioned Human Genome Project did not take massive funds or a long passage time as he stated. This was due to the realization of a related prediction - the rapid sequencing of DNA. Sequencing costs have dropped 99.9999%. More sweeping - and probably more accurate - are the far future visions for mankind. These should be seen as a rough draft, an ephemeral glimpse into what is possible but not necessarily probable. My Grade - B+

Freeman Dyson proves once again (not that any proof is actually necessary) that his mind manifests an extraordinary blend of brilliant insights and childlike wonder. The book is both accessable to the layman as well as thought provoking to the intellectually gifted. It is a shame that Freeman Dyson is not a household name. I highly recommend this book to anyone who has so much as a passing interest in science. In fact, I would even recommend it to those who don't.