2009 |
“Eureka! Good evening, folks.”It wouldn't be Doc Smith if it weren't prophetic, and in this book published in the year in which the Original Nixon was to lose the presidential election to John F. Kennedy, we catch a hint of a “New Nixon” as the intrepid Vortex Blaster visits the planet Nixson II on p. 77. While not as awe inspiring in scope as the Lensman novels, this is a finely crafted yarn which combines a central puzzle with many threads exploring characteristics of alien cultures (never cross an adolescent cat-woman from Vegia!), the ultimate power of human consciousness, and the eternal question never far from the mind of the main audience of science fiction: whether a nerdy brainiac can find a soulmate somewhere out there in the spacelanes. If you're unacquainted with the Lensman universe, this is not the place to start, but once you've worked your way through, it's a delightful lagniappe to round out the epic. Unlike the Lensman series, this book remains out of print. Used copies are readily available although sometimes pricey. For those with access to the gizmo, a Kindle edition is available.
“Eureka? I hope you rot in hell, Graves…”
“This isn't Graves. Cloud. Storm Cloud, the Vortex Blaster, investigating…”
“Oh, Bob, the patrol!” the girl screamed.
The answer to the problem of Hollywood for those of a more conservative or centrist bent is to go make movies of their own. Of course, to do so means finding financing and distribution. Today's technologies are making that simpler. Cameras and editing equipment cost a pittance. Distribution is at hand for the price of a URL. All that's left is the creativity. Unfortunately, that's the difficult part.A video interview with the author is available.
Wilson loops can describe a gauge theory such as Maxwell's theory of electromagnetism or the gauge theory of the standard model of particle physics. These loops are gauge-invariant observables obtained from the holonomy of the gauge connection around a given loop. The holonomy of a connection in differential geometry on a smooth manifold is defined as the measure to which parallel transport around closed loops fails to preserve the geometrical data being transported. Holonomy has nontrivial local and global features for curved connections.I know that they say you lose half the audience for every equation you include in a popular science book, but this is pretty forbidding stuff for anybody who wanders into the notes. For a theory like this, the fit to the best available observational data is everything, and this is discussed almost everywhere only in qualitative terms. Let's see the numbers! Although there is a chapter on string theory and quantum gravity, these topics are dropped in the latter half of the book: MOG is a purely classical theory, and there is no discussion of how it might lead toward the quantisation of gravitation or be an emergent effective field theory of a lower level quantum substrate. There aren't many people with the intellect, dogged persistence, and self-confidence to set out on the road to deepen our understanding of the universe at levels far removed from those of our own experience. Einstein struggled for ten years getting from Special to General Relativity, and Moffat has worked for three times as long arriving at MOG and working out its implications. If it proves correct, it will be seen as one of the greatest intellectual achievements by a single person (with a small group of collaborators) in recent history. Should that be the case (and several critical tests which may knock the theory out of the box will come in the near future), this book will prove a unique look into how the theory was so patiently constructed. It's amusing to reflect, if it turns out that dark matter and dark energy end up being epicycles invoked to avoid questioning a theory never tested in the domains in which it was being applied, how historians of science will look back at our age and wryly ask, “What were they thinking?”. I have a photo credit on p. 119 for a vegetable.
Oil powers just about everything in the US economy, from food production and distribution to shipping, construction and plastics manufacturing. When less oil becomes available, less is produced, but the amount of money in circulation remains the same, causing the prices for the now scarcer products to be bid up, causing inflation. The US relies on foreign investors to finance its purchases of oil, and foreign investors, seeing high inflation and economic turmoil, flee in droves. Result: less money with which to buy oil and, consequently, less oil with which to produce things. Lather, rinse, repeat; stop when you run out of oil. Now look around: Where did that economy disappear to?Now if you believe in Peak Oil (as the author most certainly does, along with most of the rest of the catechism of the environmental left), this is pretty persuasive. But even if you don't, you can make the case for a purely economic collapse, especially with the unprecedented deficits and money creation as the present process of deleveraging accelerates into debt liquidation (either through inflation or outright default and bankruptcy). The ultimate trigger doesn't make a great deal of difference to the central argument: the U.S. runs on oil (and has no near-term politically and economically viable substitute) and depends upon borrowed money both to purchase oil and to service its ever-growing debt. At the moment creditors begin to doubt they're every going to be repaid (as happened with the Soviet Union in its final days), it's game over for the economy, even if the supply of oil remains constant. Drawing upon the Soviet example, the author examines what an economic collapse on a comparable scale would mean for the U.S. Ironically, he concludes that many of the weaknesses which were perceived as hastening the fall of the Soviet system—lack of a viable cash economy, hoarding and self-sufficiency at the enterprise level, failure to produce consumer goods, lack of consumer credit, no private ownership of housing, and a huge and inefficient state agricultural sector which led many Soviet citizens to maintain their own small garden plots— resulted, along with the fact that the collapse was from a much lower level of prosperity, in mitigating the effects of collapse upon individuals. In the United States, which has outsourced much of its manufacturing capability, depends heavily upon immigrants in the technology sector, and has optimised its business models around high-velocity cash transactions and just in time delivery, the consequences post-collapse may be more dire than in the “primitive” Soviet system. If you're going to end up primitive, you may be better starting out primitive. The author, although a U.S. resident for all of his adult life, did not seem to leave his dark Russian cynicism and pessimism back in the USSR. Indeed, on numerous occasions he mocks the U.S. and finds it falls short of the Soviet standard in areas such as education, health care, public transportation, energy production and distribution, approach to religion, strength of the family, and durability and repairability of capital and the few consumer goods produced. These are indicative of what he terms a “collapse gap”, which will leave the post-collapse U.S. in much worse shape than ex-Soviet Russia: in fact he believes it will never recover and after a die-off and civil strife, may fracture into a number of political entities, all reduced to a largely 19th century agrarian lifestyle. All of this seems a bit much, and is compounded by offhand remarks about the modern lifestyle which seem to indicate that his idea of a “sustainable” world would be one largely depopulated of humans in which the remainder lived in communities much like traditional African villages. That's what it may come to, but I find it difficult to see this as desirable. Sign me up for L. Neil Smith's “freedom, immortality, and the stars” instead. The final chapter proffers a list of career opportunities which proved rewarding in post-collapse Russia and may be equally attractive elsewhere. Former lawyers, marketing executives, financial derivatives traders, food chemists, bank regulators, university administrators, and all the other towering overhead of drones and dross whose services will no longer be needed in post-collapse America may have a bright future in the fields of asset stripping, private security (or its mirror image, violent racketeering), herbalism and medical quackery, drugs and alcohol, and even employment in what remains of the public sector. Hit those books! There are some valuable insights here into the Soviet collapse as seen from the perspective of citizens living through it and trying to make the best of the situation, and there are some observations about the U.S. which will make you think and question assumptions about the stability and prospects for survival of the economy and society on its present course. But there are so many extreme statements you come away from the book feeling like you've endured an “end is nigh” rant by a wild-eyed eccentric which dilutes the valuable observations the author makes.
Although the Black Hole War should have come to an end in early 1998, Stephen Hawking was like one of those unfortunate soldiers who wander in the jungle for years, not knowing that the hostilities have ended. By this time, he had become a tragic figure. Fifty-six years old, no longer at the height of his intellectual powers, and almost unable to communicate, Stephen didn't get the point. I am certain that it was not because of his intellectual limitations. From the interactions I had with him well after 1998, it was obvious that his mind was still extremely sharp. But his physical abilities had so badly deteriorated that he was almost completely locked within his own head. With no way to write an equation and tremendous obstacles to collaborating with others, he must have found it impossible to do the things physicists ordinarily do to understand new, unfamiliar work. So Stephen went on fighting for some time. (p. 419)Or, Prof. Susskind, perhaps it's that the intellect of Prof. Hawking makes him sceptical of arguments based a “theory” which is, as you state yourself on p. 384, “like a very complicated Tinkertoy set, with lots of different parts that can fit together in consistent patterns”; for which not a single fundamental equation has yet been written down; in which no model that remotely describes the world in which we live has been found; whose mathematical consistency and finiteness in other than toy models remains conjectural; whose results regarding black holes are based upon another conjecture (AdS/CFT) which, even if proven, operates in a spacetime utterly unlike the one we inhabit; which seems to predict a vast “landscape” of possible solutions (vacua) which make it not a theory of everything but rather a “theory of anything”; which is formulated in a flat Minkowski spacetime, neglecting the background independence of general relativity; and which, after three decades of intensive research by some of the most brilliant thinkers in theoretical physics, has yet to make a single experimentally-testable prediction, while demonstrating its ability to wiggle out of almost any result (for example, failure of the Large Hadron Collider to find supersymmetric particles). At the risk of attracting the scorn the author vents on pp. 186–187 toward non-specialist correspondents, let me say that the author's argument for “black hole complementarity” makes absolutely no sense whatsoever to this layman. In essence, he argues that matter infalling across the event horizon of a black hole, if observed from outside, is disrupted by the “extreme temperature” there, and is excited into its fundamental strings which spread out all over the horizon, preserving the information accreted in the stringy structure of the horizon (whence it can be released as the black hole evaporates). But for a co-moving observer infalling with the matter, nothing whatsoever happens at the horizon (apart from tidal effects whose magnitude depends upon the mass of the black hole). Susskind argues that since you have to choose your frame of reference and cannot simultaneously observe the event from both outside the horizon and falling across it, there is no conflict between these two descriptions, and hence they are complementary in the sense Bohr described quantum observables. But, unless I'm missing something fundamental, the whole thing about the “extreme temperature” at the black hole event horizon is simply nonsense. Yes, if you lower a thermometer from a space station at some distance from a black hole down toward the event horizon, it will register a diverging temperature as it approaches the horizon. But this is because it is moving near the speed of light with respect to spacetime falling through the horizon and is seeing the cosmic background radiation blueshifted by a factor which reaches infinity at the horizon. Further, being suspended above the black hole, the thermometer is in a state of constant acceleration (it might as well have a rocket keeping it at a specified distance from the horizon as a tether), and is thus in a Rindler spacetime and will measure black body radiation even in a vacuum due to the Unruh effect. But note that due to the equivalence principle, all of this will happen precisely the same even with no black hole. The same thermometer, subjected to the identical acceleration and velocity with respect to the cosmic background radiation frame, will read precisely the same temperature in empty space, with no black hole at all (and will even observe a horizon due to its hyperbolic motion). The “lowering the thermometer” is a completely different experiment from observing an object infalling to the horizon. The fact that the suspended thermometer measures a high temperature in no way implies that a free-falling object approaching the horizon will experience such a temperature or be disrupted by it. A co-moving observer with the object will observe nothing as it crosses the horizon, while a distant observer will see the object appear to freeze and wink out as it reaches the horizon and the time dilation and redshift approaches infinity. Nowhere is there this legendary string blowtorch at the horizon spreading out the information in the infalling object around a horizon which, observed from either perspective, is just empty space. The author concludes, in a final chapter titled “Humility”, “The Black Hole War is over…”. Well, maybe, but for this reader, the present book did not make the sale. The arguments made here are based upon aspects of string theory which are, at the moment, purely conjectural and models which operate in universes completely different from the one we inhabit. What happens to information that falls into a black hole? Well, Stephen Hawking has now conceded that it is preserved and released in black hole evaporation (but this assumes an anti de Sitter spacetime, which we do not inhabit), but this book just leaves me shaking my head at the arm waving arguments and speculative theorising presented as definitive results.
“… I'm what you might call a counterterrorism specialist.” “Okay … and what, may I ask, does a counterterrorism specialist do?” Rapp was not well versed in trying to spin what he did, so he just blurted out the hard, cold truth. “I kill terrorists.” “Say again?” “I hunt them down, and I kill them.”No nuance for Mr. Mitch! This is a superbly crafted thriller which will make you hunger for the next. Fortunately, there are seven sequels already published and more on the way. See my comments on the first installment for additional details and a link to an interview with the author. The montage on the cover of the paperback edition I read uses a biohazard sign (☣) as its background—I have no idea why—neither disease nor biological weapons figure in the story in any way. Yes, I've been reading a lot of thrillers recently—summer's comin' and 'tis the season for light and breezy reading. I'll reserve Quantum Field Theory in a Nutshell for the dwindling daylight of autumn, if you don't mind.
“Hey, Jimmy Joe. How's the flow?”If you want to warm up your suspension of disbelief to take on this twaddle, imagine Tom Clancy voluntarily lending his name and reputation to it. And, hey, if you like this kind of stuff, there are nine more books in the series to read!
“Dee eff eff, Tyrone.” This stood for DFF—data flowin' fine.
“Listen, I talked to Jay Gee. He needs our help.”
“Nopraw,” Tyrone said. “Somebody is poppin' strands.”
“Tell me somethin' I don't compro, bro. Somebody is always poppin' strands.”
“Yeah, affirm, but this is different. There's a C-1 grammer [sic] looking to rass the whole web.”
“Nofeek?”
“Nofeek.”
Suddenly, a fiery chariot drawn by fiery horses descended from the sky. Sarah was driving. Urim and Thummim were shining on her breastplate of judgment.Look, I've been backed into corners in stories myself on many occasions, and every time the fiery chariot option appears the best way out, I've found it best to get a good night's sleep and have another go at it on the morrow. Perhaps you have to write and discard a million words before achieving that perspective.
Baseball, I know, needs people who can not only make snap decisions but live with them, something most people will do only when there's no other choice. Come to think of it, the world in general needs people who accept responsibility so easily and so readily. We should be thankful for them.Batter up! Answer: The run scores, the batter is called out on strikes, and the ball is dead. Had there been two outs, the third strike would have ended the inning and the run would not have scored (p. 91).
Whoever invests in the NucRocCorp and subsequent Space Charter Authority should be required to sign a declaration that commits him or her to respect the purpose of the new regime, and conduct their personal lives in a manner that recognizes the rights of their fellow man (What about woman?—JW). They must be made aware that failure to do so could result in forfeiture of their investment.Property rights, anybody? Thought police? Apart from the manifest baroque complexity of the proposed scheme, it entirely ignores Jerry Pournelle's Iron Law of Bureaucracy: regardless of its original mission, any bureaucracy will eventually be predominately populated by those seeking to advance the interests of the bureaucracy itself, not the purpose for which it was created. The structure proposed here, even if enacted (implausible in the extreme) and even if it worked as intended (vanishingly improbable), would inevitably be captured by the Iron Law and become something like, well, NASA. On pp. 36–37, the author likens attempts to stretch chemical rocket technology to its limits to gold plating a nail when what is needed is a bigger hammer (nuclear rockets). But this book brings to my mind another epigram: “When all you have is a hammer, everything looks like a nail.” Dewar passionately supports nuclear rocket technology and believes that it is the way to open the solar system to human settlement. I entirely concur. But when it comes to assuming that boosting people up to a space station (p. 111):
And looking down on the bright Earth and into the black heavens might create a new perspective among Protestant, Roman Catholic, and Orthodox theologians, and perhaps lead to the end of the schism plaguing Christianity. The same might be said of the division between the Sunnis and Shiites in Islam, and the religions of the Near and Far East might benefit from a new perspective.Call me cynical, but I'll wager this particular swing of the hammer is more likely to land on a thumb than the intended nail. Those who cherish individual freedom have often dreamt of a future in which the opening of access to space would, in the words of L. Neil Smith, extend the human prospect to “freedom, immortality, and the stars”—works for me. What is proposed here, if adopted, looks more like, after more than a third of a century of dithering, the space frontier being finally opened to the brave pioneers ready to homestead there, and when they arrive, the tax man and the all-pervasive regulatory state are already there, up and running. The nuclear rocket can expand the human presence throughout the solar system. Let's just hope that when humanity (or some risk-taking subset of it) takes that long-deferred step, it does not propagate the soft tyranny of present day terrestrial governance to worlds beyond.
There are many categories of scientists, people of second and third rank, who do their best, but do not go very far. There are also people of first class, who make great discoveries, which are of capital importance for the development of science. But then there are the geniuses, like Galileo and Newton. Well, Ettore was one of these.In 1933, Majorana visited Werner Heisenberg in Leipzig and quickly became a close friend of this physicist who was, in most personal traits, his polar opposite. Afterward, he returned to Rome and flip-flopped from his extroversion in the company of Heisenberg to the life of a recluse, rarely leaving his bedroom in the family mansion for almost four years. Then something happened, and he jumped into the competition for the position of full professor at the University of Naples, bypassing the requirement for an examination due to his “exceptional merit”. He emerged from his reclusion, accepted the position, and launched into his teaching career, albeit giving lectures at a level which his students often found bewildering. Then, on March 26th, 1938, he boarded a ship in Palermo Sicily bound for Naples and was never seen again. Before his departure he had posted enigmatic letters to his employer and family, sent a telegram, and left a further letter in his hotel room which some interpreted as suicide notes, but which forensic scientists who have read thousands of suicide notes say resemble none they've ever seen (but then, would a note by a Galileo or Newton read like that of the run of the mill suicide?). This event set in motion investigation and speculation which continues to this very day. Majorana was said to have withdrawn a large sum of money from his bank a few days before: is this plausible for one bent on self-annihilation (we'll get back to that infra)? Based on his recent interest in religion and reports of his having approached religious communities to join them, members of his family spent a year following up reports that he'd joined a monastery; despite “sightings”, none of these leads panned out. Years later, multiple credible sources with nothing apparently to gain reported that Majorana had been seen on numerous occasions in Argentina, and, abandoning physics (which he had said “was on the wrong path” before his disappearance), pursued a career as an engineer. This only scratches the surface of the legends which have grown up around Majorana. His disappearance, occurring after nuclear fission had already been produced in Fermi's laboratory, but none of the “boys” had yet realised what they'd seen, spawns speculation that Majorana, as he often did, figured it out, worked out the implications, spoke of it to someone, and was kidnapped by the Germans (maybe he mentioned it to his friend Heisenberg), the Americans, or the Soviets. There is an Italian comic book in which Majorana is abducted by Americans, spirited off to Los Alamos to work on the Manhattan Project, only to be abducted again (to his great relief) by aliens in a flying saucer. Nobody knows—this is just one of the many mysteries bearing the name Majorana. Today, Majorana is best known for his work on the neutrino. He responded to Paul Dirac's theory of the neutrino (which he believed unnecessarily complicated and unphysical) with his own, in which, as opposed to there being neutrinos and antineutrinos, the neutrino is its own antiparticle and hence neutrinos of the same flavour can annihilate one another. At the time these theories were proposed the neutrino had not been detected, nor would it be for twenty years. When the existence of the neutrino was confirmed (although few doubted its existence by the time Reines and Cowan detected it in 1956), few believed it would ever be possible to distinguish the Dirac and Majorana theories of the neutrino, because that particle was almost universally believed to be massless. But then the “scientific consensus” isn't always the way to bet.
Starting with solar neutrino experiments in the 1960s, and continuing to the present day, it became clear that neutrinos did have mass, albeit very little compared to the electron. This meant that the distinction between the Dirac and Majorana theories of the neutrino was accessible to experiment, and could, at least in principle, be resolved. “At least in principle”: what a clarion call to the bleeding edge experimentalist! If the neutrino is a Majorana particle, as opposed to a Dirac particle, then neutrinoless double beta decay should occur, and we'll know whether Majorana's model, proposed more than seven decades ago, was correct. I wish there'd been more discussion of the open controversy over experiments which claim a 6σ signal for neutrinoless double beta decay in 76Ge, but then one doesn't want to date one's book with matters actively disputed.
To the book: this may be the first exemplar of a new genre I'll dub “gonzo scientific biography”. Like the “new journalism” of the 1960s and '70s, this is as much about the author as the subject; the author figures as a central character in the narrative, whether transcribing his queries in pidgin Italian to the Majorana family:“Signora wifed a brother of Ettore, Luciano?”Besides humourously trampling on the language of Dante, the author employs profanity as a superlative as do so many “new journalists”. I find this unseemly in a scientific biography of an ascetic, deeply-conflicted individual who spent most of his short life in a search for the truth and, if he erred, erred always on the side of propriety, self-denial, and commitment to dignity of all people. Should you read this? Well, if you've come this far, of course you should! This is an excellent, albeit flawed, biography of a singular, albeit flawed, genius whose intellectual legacy motivates massive experiments conducted deep underground and in the seas today. Suppose a neutrinoless double beta decay experiment should confirm the Majorana theory? Should he receive the Nobel prize for it? On the merits, absolutely: many physics Nobels have been awarded for far less, and let's not talk about the “soft Nobels”. But under the rules a Nobel prize can't be awarded posthumously. Which then compels one to ask, “Is Ettore dead?” Well, sure, that's the way to bet: he was born in 1906 and while many people have lived longer, most don't. But how you can you be certain? I'd say, should an experiment for neutrinoless double beta decay prove conclusive, award him the prize and see if he shows up to accept it. Then we'll all know for sure. Heck, if he did, it'd probably make Drudge.
“What age did signora owned at that time”
“But he was olded fifty years!”
“But in end he husbanded you.”