Category Archives: Science Communication

Hype versus Miscommunication, or the Language of Importance

A fellow amplitudes-person was complaining to me recently about the hype surrounding the debate regarding whether black holes have “firewalls”. New York Times coverage seems somewhat excessive for what is, in the end, a fairly technical debate, and its enthusiasm was (rightly?) mocked in several places.

There’s an attitude I often run into among other physicists. The idea is that when hype like this happens, it’s because senior physicists are, at worst, cynically manipulating the press to further their positions or, at best, so naïve that they really see what they’re working on as so important that it deserves hype-y coverage. Occasionally, the blame will instead be put on the journalists, with largely the same ascribed motivations: cynical need for more page views, or naïve acceptance of whatever story they’re handed.

In my opinion, what’s going on there is a bit deeper, and not so easily traceable to any particular person.

In the articles on the (2, 0) theory I put up in the last few weeks, I made some disparaging comments about the tone of this Scientific American blog post. After exchanging a few tweets with the author, I think I have a better idea of what went down.

The problem here is that when you ask a scientist about something they’re excited about, they’re going to tell you why they’re excited about it. That’s what happened here when Nima Arkani-Hamed was interviewed for the above article: he was asked about the (2, 0) theory, and he seems to have tried to convey his enthusiasm with a metaphor that explained how the situation felt to him.

The reason this went wrong and led to a title as off-base and hype-sounding as “the Ultimate Ultimate Theory of Physics” was that we (scientists and science journalists) are taught to express enthusiasm in the language of importance.

There has been an enormous resurgence in science communication in recent years, but it has come with a very us-vs.-them mentality. The prevailing attitude is that the public will only pay attention to a scientific development if they are told that it is important. As such, both scientists and journalists try to make whatever they’re trying to communicate sound central, either to daily life or to our understanding of the universe. When both sides of the conversation are operating under this attitude, it creates an echo chamber where a concept’s importance is blown up many times greater than it really deserves, without either side doing anything other than communicating science in the only way they know.

We all have to step back and realize that most of the time, science isn’t interesting because of its absolute “importance”. Rather, a puzzle is often interesting simply because it is a puzzle. That’s what’s going on with the (2, 0) theory, or with firewalls: they’re hard to figure out, and that’s why we care.

Being honest about this is not going to lose us public backing, or funding. It’s not just scientists who value interesting things because they are challenging. People choose the path of their lives not based on some absolute relevance to the universe at large, but because things make sense in context. You don’t fall in love because the target of your affections is the most perfect person in the universe, you fall in love because they’re someone who can constantly surprise you.

Scientists are in love with what they do. We need to make sure that that, and not some abstract sense of importance, is what we’re communicating. If we do that, if we calm down and make a bit more effort to be understood, maybe we can win back some of the trust that we’ve lost by appearing to promote Ultimate Ultimate Theories of Everything.

Hawking vs. Witten: A Primer

Have you seen the episode of Star Trek where Data plays poker with Stephen Hawking? How about the times he appeared on Futurama or the Simpsons? Or the absurd number of times he has come up in one way or another on The Big Bang Theory?

Stephen Hawking is probably the most recognizable theoretical physicist to laymen. Wheelchair-bound and speaking through a voice synthesizer, Hawking presents a very distinct image, while his work on black holes and the big bang, along with his popular treatments of science in books like A Brief History of Time, has made him synonymous in the public’s mind with genius.

He is not, however, the most recognizable theoretical physicist when talking to physicists. If Sheldon from The Big Bang Theory were a real string theorist he wouldn’t be obsessed with Hawking. He might, however, be obsessed with Edward Witten.

Edward Witten is tall and has an awkwardly high voice (for a sample, listen to the clip here). He’s also smart, smart enough to dabble in basically every subfield of theoretical physics and manage to make important contributions while doing so. He has a knack for digging up ideas from old papers and dredging out the solution to current questions of interest.

And far more than Hawking, he represents a clear target for parody, at least when that parody is crafted by physicists and mathematicians. Abstruse Goose has a nice take on his role in theoretical physics, while his collaboration with another physicist named Seiberg on what came to be known as Seiberg-Witten theory gave rise to the cyber-Witten pun.

If you would look into the mouth of physics-parody madness, let this link be your guide…

So why hasn’t this guy appeared on Futurama? (After all, his dog does!)

Witten is famous among theorists, but he hasn’t done as much as Hawking to endear himself to the general public. He hasn’t written popular science books, and he almost never gives public talks. So when a well-researched show like The Big Bang Theory wants to mention a famous physicist, they go to Hawking, not to Witten, because people know about him. And unless Witten starts interfacing more with the public (or blog posts like this become more common), that’s not about to change.

Sound Bite Management; or the Merits of Shock and Awe

First off, for the small demographic who haven’t seen it already (and aren’t reading this because of it), I wrote an article for Ars Technica. Go read it.

After the article went up, a professor from my department told me that he and several others were concerned about the title.

Now before I go on, I’d like to clarify that this isn’t going to be a story about the department trying to “shut me down” or anything paranoid like that. The professor in question was expressing a valid concern in a friendly way, and it deserves some thought.

The concern was the following: isn’t a title like Earning a PhD by studying a theory that we know is wrong” bad publicity for the field? Regardless of whether the article rebuts the idea that “wrong” is a meaningful descriptor for this sort of theory, doesn’t a title like that give fuel to the fire, sharpening the cleavers of the field’s detractors as one commenter put it? In other words, even if it’s a good article, isn’t it a bad sound bite?

It’s worryingly easy for a catchy sound bite to eclipse everything else about a piece. As one commenter pointed out, that’s roughly what happened with Palin’s fruit fly comment itself. And with that in mind, the claim that people are earning PhDs based on “false” theories definitely sounds like the sort of sound bite that could get out of hand in a hurry if the wrong community picked it up.

There is, at least, one major difference between my sound bite and Palin’s. In the political climate of 2008 it was easy to believe that Sarah Palin didn’t understand the concept of fruit fly research. On the other hand, it’s quite a bit less plausible that Ars would air a piece calling most work in theoretical physics useless.

In operation here is the old, powerful technique of using a shocking, dissonant headline to lure people in. A sufficiently out-of-character statement won’t be taken at face value; rather, it will inspire readers to dig in to the full article to figure out what they’re missing. This is the principle behind provocateurs in many fields, and while there are always risks, often this is the only way to get people to think about complex issues (Peter Singer often seems to exemplify the risks and rewards of this tactic, just to give an example).

What’s the alternative here? In referring to the theory I study as “wrong”, I’m attempting to bring readers face to face with a common misconception: the idea that every theory in physics is designed to approximate some part of the real world. For the physicists in the audience, this is the public perception that everything in theoretical physics is phenomenology. If we don’t bring this perception to light and challenge it, then we’re sweeping a substantial amount of theoretical physics under the rug for the sake of a simpler message. And that’s risky, because if people don’t understand what physics really is then they’re likely to balk when they glimpse what they think is “illegitimate” physics.

In my view, shocking people by describing my type of physics as not “true” is the best way to teach people about what physicists actually do. But it is risky, and it could easily give people the wrong impression. Only time will tell.

Some thoughts about the current Flame Challenge

Ever tried to explain something to an eleven year old?

It’s not the same as talking to a six year old. There’s no need to talk down, or to oversimplify: eleven is smart enough to understand most of what you have to say. On the other hand, most eleven year olds haven’t had chemistry or physics, or algebra. They’re about as intelligent as they’re going to get, but with almost no knowledge base, which makes them a uniquely relevant challenge for communicating science.

That’s the concept behind Alan Alda’s Flame Challenge: eleven year olds around the country pick a question and scientists (via video, images, or text) attempt to answer it. Last year, the challenge question was “What is a flame?” a question from Alan Alda’s own youth. This year, the eleven year olds had their first opportunity to choose, and they chose a doozy: “What is time?”

This is…well, a difficult question. Not just hard to explain, it’s a question that could mean one of several different things. Alan Alda has embraced the ambiguity and assures contestants that they can pursue whichever interpretation they think best, but in the end the judges are eleven year olds around the country, and it will be their call whether an answer is sufficient.

(As an aside, I think this sort of ambiguous question isn’t a fluke: barring a new vetting procedure, we’re going to keep getting questions like this. If an eleven year old wants to understand something with a definite answer, he or she will just Google it. It’s only the ambiguous, tricky, arguably poorly-formed questions that can’t be answered by a quick search.)

I’ve been brainstorming a bit, and I’ve come up with a few meanings for the question “What is time?”

  • How should time travel work? In my own limited experience with kids asking about time, this is usually what they’re going for. Screw the big philosophical questions: can I go kill a dinosaur, and if I do, should I be worried that everyone will be speaking Chinese when I get back? In some ways this is the easiest question to answer because, barring Everett-style interpretations of quantum mechanics, there really is only one way for time travel to work consistent with current science, and that’s through wormholes. Wormholes aren’t an especially difficult concept: all they really require is some understanding of the idea that space can be curved. Flatland in particular proves ideal for teaching students to think of space as more than just three static directions, which is why I’m considering the (potentially wildly overambitious) idea of submitting an animated Flatland story dealing with wormholes and time travel for the Flame Challenge. By the way, any budding scientist-animators who are interested in collaborating on such a project are more than welcome! I’m not sure I can do this without help. By the way, one downside of this approach is that it is very well covered by movies and other media, so it is entirely possible that most eleven year olds know this already.
  • What makes time different from other dimensions? There is a flippant physicist answer to this question, and that is that time has a different sign in the Minkowski metric. What that means, in very vague terms, is that while rotations in space will always come back to where they started, if you rotate something in both space and time (it turns out all this means is gaining speed) you can keep going indefinitely, getting closer and closer to the speed of light without ever getting back to your previous speed. If you want to know why time is special like that, that’s harder to say, but occasionally papers bubble up on arXiv claiming that they understand why this should be the case. I’d love it if an author of one of those papers made a submission to the Flame Challenge.
  • Why does time have an arrow? Why does it only go forwards? This is not the same question as the previous one! This is much harder, and depending on who you talk to it relates somehow to entropy and thermodynamics or to quantum mechanics, or even to biology and psychology. It’s tricky to explain, but there have been many attempts, and I don’t doubt that a substantial number of the submissions will be in this vein.
  • How does Special Relativity (or General Relativity) work? How can time go faster or slower? This is a more specialized version of the question about why time is unique, and one that Alan Alda has made mention of in his interviews. Teaching Special Relativity or General Relativity to eleven year olds is a challenge, which is not to say it is impossible but rather the reverse: unlike the other questions, this is unambiguous enough that with enough work someone could do it, and possibly advance the field of science communication in doing so.
  • Is time real? Could time be an illusion? There are a number of variations of this, ranging from purely philosophical to directly scientific. Is it better to think of everything as happening at once, and our minds simply organizing it? Is time merely change, or could time exist in a changeless universe? There is a lot of ambiguity in answering this form of the question, and while we’ll see a few people trying to go in this vein I doubt there’s an answer that will satisfy the world’s eleven year olds.
  • Side topics. Someone could, of course, go on a completely different route. They could explain clocks, and timekeeping throughout the ages. They could talk about the definition of a second. They could talk about the beginning of time, and what that means, or discuss whether or not time had a beginning at all. They could talk about the relationship between energy and time, how one, via Noether’s Theorem, implies the other. There are many choices here, and the trick is to avoid straying too far from the main point. Eleven year olds are not forgiving folks, after all.

I am very much looking forward to seeing what people submit, and if all goes extraordinarily well, I may even have a submission too. It’s a very difficult topic this year, but we’re scientists! If anyone can do it, we can.

A Note on Blogging Style

So I’ve come to realize that my blog posts have a somewhat odd format for a science blog, in that I tend to use paragraphs of only one or two sentences, with important points in bold.

While I somehow had the impression that this was a common style in science blogging, I haven’t seen it elsewhere, and a few weeks ago I figured out where it comes from: it’s the same style I use when writing D&D optimization handbooks.

In that field (if I may call it a field), it’s a fairly common writing style. It works well for its target audience, with short paragraphs to appeal to short attention spans and bolding to isolate the elementary concepts behind rules and advice. Liberal application of links and references then allows the reader to check up on the topic, each time increasing their knowledge of the subject’s wider context.

All of these seem like perfectly good things to cultivate in a science blog too!

My style may evolve over time, but I definitely think this is a good place to start. If you don’t like it, though, feel free to comment! If I’m not communicating with my readers, I’m not accomplishing very much, now am I?