Author: Sean Carroll

  • Science and Journalism, Intersecting

    We’re happy to welcome The Intersection, featuring the bloggy stylings of Chris Mooney and Sheril Kirshenbaum, to their new home here at Discover Blogs! Anyone who isn’t already following their excellent work is encouraged to go have a look.

    It’s great timing, as Sheril and Chris are experts in the intersection of science and journalism (among other intersections), and that’s going to be a hot topic in the days to come. There was something of a dustup a few months ago, set off by dueling Bloggingheads dialogues, first from science bloggers Abbie Smith and Ed Yong, then by journalists George Johnson and John Horgan. Apparently Abbie was questioning the role of journalists in an era where scientists can reach out themselves through blogs, and George responded in a somewhat intemperate fashion. (He later apologized for the tone, although not really the sentiment.) Much back-and-forth ensued — see responses by Brian Switek and Chad Orzel. And just last week, Geoff Brumfiel at Nature wrote a feature exploring the relationship between science journalism and science blogs, with the tagline: “But can the one replace the other?”

    Well, no. Science blogging will never replace science journalism, any more than other kinds of blogging will replace other kinds of journalism. (Of course blogging can include just about any kind of writing, including what we usually call “journalism”; I’m thinking here of the specific case of people whose day job is doing science, and who blog in their spare time.) They have very different roles. Journalists are paid to cover stories of wide interest, to get multiple perspectives on new results, and to be as objective as possible in separating the wheat from the chaff. Science bloggers are sometimes going to blog about something newsworthy, but most can’t be bothered trying to cover every interesting story, and years will pass before a typical blogger picks up a phone to interview a source before posting. Instead, they bring a special expertise and inside knowledge to a field that no general-purpose journalist can hope to match.

    I’m not sure what the source of controversy really is. It seems perfectly obvious that science blogging should enrich and extend conventional science journalism, not aspire to replace it. (See also sensible takes from Jessica Palmer at bioephemera and Curtis Brainard at the Columbia Journalism Review. [Hey! A blogger and a journalist!]) Movies didn’t replace live theater, airplanes didn’t replace cars, mammals didn’t replace birds. These are things that serve different functions.

    The conversation we should be having is how the two forms can work together. How great would it be, for example, if major newspapers regularly linked to relevant blog entries by real experts when a big science story broke? It might actually require some effort to make something like that happen, just because of the way journalism these days works, including the tradition of embargoed results. When the Bullet Cluster results indicating the existence of dark matter were first released, I was lucky enough to be a participant in the original press conference, so I had access to the papers before most people did. Consequently, I was able to write an informed post that could be pointed to by people looking for an expert-level discussion. But ordinarily, such pre-embargo access is only given to professional journalists. If the communities worked a bit more closely together, we might be able to more regularly combine the reportage and explanatory skills of professional journalists with the in-depth perspective of professional scientists.

    Meanwhile, newspapers are dying. CNN shut down its science division. The amount of real science journalism is shrinking dramatically, and any scientist who thinks that’s a good thing for the field as a whole is living in crazy land. The old ways of doing business are crumbling, and we have to find new ways to work together.

  • Egg in a Box

    Sure is quiet around here. I can’t blog much, as I’m in the final throes of book-writing. So instead, let’s have some user-generated content!

    Here is a figure that I’ve drawn for use in my book.

    egginabox-sm.gif

    Your mission, should you choose to accept it, is to figure out what the figure is supposed to be illustrating, and what lesson is purportedly conveyed. (Hint: that’s supposed to be an egg.) How hard can it be?

    If it’s a fruitful exercise, we can repeat for other figures, similarly inscrutable.

  • Chrono-Synclastic Infundibulum

    I’m happy to announce that the first review of From Eternity to Here has appeared, over at Michael Bérubé’s blog. It has also appeared at Crooked Timber, a phenomenon that can ultimately traced to the holographic non-locality inherent in quantum descriptions of space as well as time.

    Readers of underdeveloped imagination will wonder how a review could appear when the book has not yet been written. When one has mastered the mysteries of time, should anyone be surprised?

  • Old Folks Wing of the Blogodome

    The end of February marked five full years of blogging for me. And did anyone send me a cake? No, they did not.

    After a half-decade, I can slack off a bit while I finish the book. But here are some other goodies to keep you entertained on the internets:

    A few months ago, friend-of-the-blog George Musser from Scientific American visited us here in LA, and had some fascinating stories about the process of equipping his house with solar power. We were like: dude, that is totally bloggable. And so it is! George is telling his tale in a series of posts at the SciAm 60 Second Science site.

    Malcolm MacIver, a versatile engineer/philosopher/neuroscientist at Northwestern University, also flew out to LA a short while back to help the Science and Entertainment Exchange with a consultation for the upcoming sequel to TRON. He is now blogging about the experience at Northwestern’s Science in Society blog: here, here, here.

    The 2008 edition of The Open Laboratory, collecting science blog posts from around the web, is now on sale. Thanks to Bora Zivkovic and Jennifer Rohm for doing the heavy lifting.

    As always, use these threads to pimp out other things people should be reading.

  • The Envelope Please…

    The results are in for the Foundational Questions Institute essay competition on “The Nature of Time,” which we discussed here. And the winners are:

    First Juried Prize:

    Julian Barbour on “The Nature of Time”

    The jury panel admired this essay for its crystal-clear and engaging presentation of a problem in classical dynamics, namely to find a measure for duration or the size of a time interval. The paper argues lucidly, and in a historically well-informed manner, that an appropriate choice for such a measure is not to be found in Newton’s pre-existing absolute notion of time, but rather emerges, in the form of ephemeris time, from the observable motions and the assumption of energy conservation. The paper also suggests how this emergence of duration might be relevant to problems in quantum gravity.

    Second Juried Prizes:

    (1) Claus Kiefer on “Does Time Exist in Quantum Gravity?”

    A fundamental problem in quantum gravity is that the “Wheeler-DeWitt Equation,” probably our most reliable equation of quantum gravity, does not refer to or even suggest anything like time or evolution. In this context time must emerge in the form of relations between a given system and some other system that may be considered a clock. Kiefer beautifully reviews this problem, and argues how, via quantum “decoherence,” time as described by the usual Schroedinger equation in quantum mechanics can emerge from this timeless substratum, via entanglement between physical systems within space, and the spatial metric that controls motion.

    (2) Sean Carroll on “What if Time Really Exists?”

    Drawing on recent developments in string theory, Carroll impressed the panel with an exciting account of how a gravitating spacetime might in fact be just a holographic approximation to a more fundamental non-gravitating theory for which “time really exists.” Contemplating the difficulties raised by strange recurrences in an everlasting universe, he argues for a strong condition on the set of allowed quantum states that would disallow such repetitions. Carroll closes by attempting to reconcile this picture with recent observations that indicate that the expansion of the universe is accelerating, with surprising results.

    Tied for second is not at all bad, considering the number of interesting entries. There are more prizes, actually, as there are “community” awards as well as “juried” prizes, so check those out as well. It’s pretty amusing that the top three essays all attack, in one way or another, whether or not the subject of the competition actually exists. (I was in favor, the others were more skeptical.)

    Besides the essays themselves, I very much appreciate the huge amount of work it must have been for the various judges to read through all of them and make hard decisions. Thanks to the FQXi for sponsoring the contest, and thanks to all the judges for doing a great job!

  • “I understand nothing”

    From The Tao of Physics to What the Bleep Do We Know?, quantum mechanics has been a favorite target for wildly misguided cultural appropriations. That’s hardly surprising; quantum mechanics is hard, and not many physicists understand it at a deep level. The only interesting argument is whether “not many” in that sentence should be replaced by “no.”

    Yesterday I stumbled across two invocations of quantum mechanics in very different contexts. First, via 3quarksdaily, historian John Lukacs muses on the centrality of our nature as human beings to our ability to apprehend and understand the world.

    All of this happened during and after three-quarters of a century when physicists, inventing and dependent on more and more powerful machines, have found more and more smaller and smaller particles of matter, affixing them with all kinds of names. Until now, well into the 21st century, it is (or should be) more and more likely that not only A Basic Theory of Everything but also the smallest Basic Unit of Matter will and can never be found. Why? Because these particles are produced by scientists, human beings themselves.

    Every piece of matter—just as every number—is endlessly, infinitely divisible because of the human mind. Some scientists will admit this. Others won’t.

    It goes on like that at great length; it was hard to choose a representative excerpt. Basically, Lukacs is making a mistake resembling that which I accused Paul Davies of some time back — demanding that properties of as-yet-known physical theories conform to some cherished metaphysical presuppositions. In reality, the fact that scientists built the apparatuses that produce elementary particles doesn’t tell us anything at all about whether a Theory of Everything is an attainable goal. It may or may not be, but our status as conscious human beings doesn’t have anything to say about it.

    And then, via Cynical-C, we find Roger Ebert reviewing Watchmen:

    So let’s ask what we understand about quantum mechanics. We’ll start with me. I understand nothing.

    Oh, I’ve read a lot about it. Here is what I think I know: At a basic level, the universe is composed of infinitesimal bits, I think they’re called strings, which seem to transcend our ideas about space and time. One of these bits can be in two places at once, or, if two bits are at a distance, can somehow communicate with one another. Now I have just looked it all up in Wikipedia, and find that not only don’t I understand quantum mechanics, I don’t understand the article either. So never mind. Let’s just say my notions are close to the general popular delusions about the subject, and those are what Dr. Manhattan understands.

    Let’s see: despite the name “quantum,” it’s not really right to think of quantum mechanics as based on individual “bits.” But it’s true that fields resolve themselves into particles under careful observation, so that’s an excusable confusion. “Strings” have nothing to do with it, a consequence of mixing up different topics in the pop-science domain. “Somehow communicate with each other” refers to entanglement — widely-separated entangled particles don’t really communicate, but that’s certainly our fault as scientists and communicators, since we keep saying that they do.

    There are two major differences between Lukacs’s discourse on quantum mechanics and Ebert’s. First, Lukacs is much more subtle, intricately weaving concepts from modern physics into a thesis concerning the role of history in human affairs. (Still completely wrong, of course.) But second and more importantly, Ebert admits he has no idea what he’s talking about, and goes to look things up on Wikipedia; Lukacs, in contrast, flaunts his misunderstanding, waving it around as proof of his erudition. Score one for the non-academics.

    (And there’s no justification for scientists sneering at historians in general on this score; if I had a nickel for every time a physicist flung around concepts like “falsifiability” or “postmodernism” without knowing what was going on, I could rescue the American banking system all by myself.)

    What I really found interesting was that Ebert, after giving up on Wikipedia — and rightfully so, their physics articles are uniformly useless for someone approaching the ideas as an outsider — turned next to YouTube for edification! He includes a few clips that try to say something helpful about quantum mechanics. I wonder if that’s the wave of the future. It gave me the idea of making a set of very short videos, each of which would succinctly explain one scientific idea. Making a two-minute video would take less time than writing a decent blog post. (Right?)

  • Ex-

    Quick! What do the following kinds of people have in common?

    • Rebel
    • Hypocrite
    • Masturbator
    • Atheist
    • Slave
    • Diva
    • Fornicator
    • Porn Addict
    • Homosexual

    Answer below the fold.
    (more…)

  • A Teaching Moment: Angels & Demons

    May 15 will be the premiere of Angels & Demons, the Ron Howard movie starring Tom Hanks and Ayelet Zurer, based on the Dan Brown novel. The narrative moves between particle physics at CERN and religious politics at the Vatican — feel free to provide your own characterization of that particular binary opposition.

    Angels & Demons at CERN

    We have no idea how good the movie is going to be, but it’s sure to garner attention, and it does feature physics prominently. So the Division of Particles and Fields of the American Physical Society figures that we might as well get some mileage out of it. They recently sent around the email below, encouraging physics departments to host “Angels & Demons lecture nights” to capitalize on the interest generated by the movie. Seems like a good idea to me — rather than spending energy finding flaws in the physics as portrayed in the movie (which are sure to be there), let’s grab the opportunity to spread the word about some exciting science that’s being done in the real world. If nothing else, the most common question about the LHC will change from “Will it make a black hole that will destroy the world?” to “Will it make an anti-matter bomb that could destroy the Vatican?”

    This May, Sony Pictures will release Angels and Demons, a movie based
    on Dan Brown’s best-selling novel that focuses on an apparent plot to
    destroy the Vatican using a small amount of antimatter. In the book
    and the movie, that antimatter gets stolen from CERN.

    Starring Tom Hanks and directed by Ron Howard, parts of the movie were
    actually filmed at CERN. It’s not every day that a major motion
    picture places particle physics in the spotlight. The US particle
    physics community would like to take advantage of this opportunity to
    tell the world about the science behind the movie, the Large Hadron
    Collider and the excitement of particle physics.

    Along these lines, the Fermilab, SLAC and US LHC users organizations
    will join forces to organize Angels and Demons public lecture nights
    at universities or other venues across the country when the movie
    premieres in mid-May. While each institution will be responsible for
    the local logistics of planning the public lecture, the Fermilab
    Office of Communications and the CERN Press Office can help. A Web
    page on the US LHC Web site (http://www.uslhc.us/Angels_Demons) will
    provide you with materials that will include:

    – a template PowerPoint talk, for your use if helpful

    – a template poster to advertise the lecture at your institution

    – tips on answering tough questions

    – information on how to broadcast the lecture on the Web

    If you would like to host a lecture, please contact Elizabeth Clements
    (lizzie@fnal.gov) or Katie Yurkewicz (katie@fnal.gov). They will give
    you more information and help you with publicity for your event.

    While the movie contains a great deal that is not about science,
    physics is central to its plot. This makes it possible for US
    physicists to lecture on the science behind the movie, the Large
    Hadron Collider and particle physics in general. The physics at the
    heart of Angels and Demons–the potential destruction of the Vatican
    by a small chunk of antimatter–calls attention to what happens when
    matter and antimatter meet. This in turn calls attention to the fact
    that the absence of practically any antimatter in the universe is
    crucial to our existence. To understand that absence is one of the big
    challenges of particle physics. Public lectures could discuss the
    challenge of the missing antimatter, possible solutions and how
    experiments in both the intensity and energy frontiers will explore
    these mysteries.

    In order to allow enough time to plan and advertise the lecture at
    your institution, the time to get started is now. We hope that you
    will make the most of this wonderful opportunity to get the public
    excited about particle physics and the many anticipated discoveries
    that lie ahead.

    Sincerely,

    Boris Kayser, Chair
    Division of Particles and Fields
    American Physical Society

  • Help a Fangrrl Out?

    Many Cosmic Variance readers will recognize friend-of-the-blog Allyson Beatrice — frequent commenter, occasional solo blogger, and co-blogger at Cocktail Party Physics. For a while now, Allyson’s day job has been as an administrator and conference organizer for groups of scientists and engineers — a task of uncertain rewards which, for whatever murky reasons, she truly seems to love.

    I’m a lab secretary. If I’m your lab’s secretary, I have access to your credit cards, your CV, your passport, and your society memberships. I could write a crackpot paper about string theory and its effects on pineapple custard and publish it under your name on Optics Express.

    But I wouldn’t do that. My job is to get you to the plane on time so that you can present your brilliant paper on quantum physics and gravity in the solar system to a bunch of people whose lives revolve around fun new uses for cesium fountains. I have no idea what any of it means, but if some government bureaucrat gets in between you and your travels, I will cut a bitch to make sure you get to your conference.

    Unfortunately, through a series of circumstances too forehead-slappingly stupid to be convincingly related here, Allyson is soon going to be out of her current job. (She gave her notice at her lab, under the impression that an even better gig had been lined up, before the rug was pulled out from under her.)

    So — anyone in the LA area in the market for an extraordinarily talented and dedicated lab secretary? Whoever ultimately hires Allyson will be extremely lucky, but in this economy jobs don’t come easily. Things are tough all over, but it’s heartbreaking to see someone so good go jobless through no fault of their own. Email me and I’ll pass along any leads. And thanks.

  • The Sunday Function

    I sometimes forget that we don’t all read the same blogs, and that it’s good to recommend some of the fun stuff out there on the internets. So let me give a shout-out to Matt Springer at Built on Facts, who had the brilliant idea of discussing a different function every Sunday. Functions are one of those things that are as necessary to math and science as breathing, but which don’t necessarily percolate into the wider world. And he (quite correctly, I think) interprets his self-imposed mandate fairly liberally, taking the time to talk about various issues in middle-level mathematics. Here are some selections from Matt’s series:

    Consider this an open thread to recommend other stuff we should all be reading. Or your favorite functions.