18 April 2018

Teaching online and inclusion

"Do you expect me to talk, Goldfinger?" "No Mr. Bond, I expect you to make this online course ADA compliant!"

 I’ve been teaching a completely online class this semester. I’ve done partly online classes, and practically live online anyway, so I thought this would be a fairly simple thing for me to do.

It has not. It has been a real eye-opener for thinking about student needs.

One of the biggest challenges I’ve been working with is making the class compliant with the rules for students with disabilities. The rules are that whether there are students in the class who have declared disabilities or not, you must make every item in the class as readily available and accessible as if there were students with disabilities.

This means video lectures need closed captioning. There is voice recognition software that does closed captioning automatically, which is great, but it never does it perfectly. Every time I say, “Doctor Zen,” the software puts in, “doctors in.” This means you have to go in, listen to the entire lecture, and proofread the captioning for entire lecture.

Similarly, every image needs a description so that someone who is blind or otherwise visually impaired can understand the material. And many scientific diagrams are complex and challenging. Today, I was forced with trying to write a complete description of this:

Human genome influences traits. Human genome has 2 copies in every cell. 1 copy is made of 3 billion base pairs. Cell makes up tissue. In cell, genome divided into nuclear genome and mitochondrial genome. Cells manifest traits. Tissues make up organs. Tissues manifest traits. Organs make up body. Body manifests traits. Traits leads back to Lesson 1. Mitochondrial genome has 1 circular chromosome. Mitochondrial genome is many per cell. Circular chromosome is many per cell. Circular chromosome made of nucleic acid and histone proteins. Nuclear genome is one per cell. Nuclear genome is 23 pairs of linear chromosomes. 23 pairs of linear chromosomes has 22 pairs called autosomes. 23 pairs of linear chromosomes has 1 pair called sex chromosomes. Sex chromosomes are XX for female. Sex chromosomes are XY for male. 23 pairs of linear chromosomes are made of nucleic acid and histone proteins. Nucleic acid wraps around histone proteins. Nucleic acid has two types, DNA and RNA. RNA leads to lesson 3. DNA is composed on deoxynucleotides. DNA is double stranded. DNA composed of deoxynucleotides. Double stranded leads to helical shape. Double stranded by base pairs. Deoxynucleotides are 4 types of nitrogenous bases. Nitrogenous bases can form base pairs. Nitrogenous base connects to A, T, C, G. A base pairs with T and vice versa. G base pairs with C and vice versa.

Here’s what I came up with for the concept map above:

Human genome influences traits. Human genome has 2 copies in every cell. 1 copy is made of 3 billion base pairs. Cell makes up tissue. In cell, genome divided into nuclear genome and mitochondrial genome. Cells manifest traits. Tissues make up organs. Tissues manifest traits. Organs make up body. Body manifests traits. Traits leads back to Lesson 1. Mitochondrial genome has 1 circular chromosome. Mitochondrial genome is many per cell. Circular chromosome is many per cell. Circular chromosome made of nucleic acid and histone proteins. Nuclear genome is one per cell. Nuclear genome is 23 pairs of linear chromosomes. 23 pairs of linear chromosomes has 22 pairs called autosomes. 23 pairs of linear chromosomes has 1 pair called sex chromosomes. Sex chromosomes are XX for female. Sex chromosomes are XY for male. 23 pairs of linear chromosomes are made of nucleic acid and histone proteins. Nucleic acid wraps around histone proteins. Nucleic acid has two types, DNA and RNA. RNA leads to lesson 3. DNA is composed on deoxynucleotides. DNA is double stranded. DNA composed of deoxynucleotides. Double stranded leads to helical shape. Double stranded by base pairs. Deoxynucleotides are 4 types of nitrogenous bases. Nitrogenous bases can form base pairs. Nitrogenous base connects to A, T, C, G. A base pairs with T and vice versa. G base pairs with C and vice versa.

Writing that description... took time.

Anyone who think that online teaching is going to be some sort of big time saver that will allow instructors to reach a lot more students has never prepared an online class. It’s long. It’s hard. It’s often bordering on tortuous (hence the “No Mr. Bond” gag at the top of the post).

These things take time, but I don’t begrudge the time spent. It’s the right thing to do. It’s forced me to think more deeply about how I can provide more resources that are more helpful to more students. It’s not just deaf students who can benefit from closed captions, for instance. Someone who can hear could benefit from seeing words spelled out, or maybe use them when they are listening in a noisy environment, or one where sound would be distracting.

And I keep thinking that if I think it takes a lot of work to put these it, it’s nothing compared to students who need these materials who have to navigate through courses every day.

External links

Flowcharts and concept maps

16 April 2018

“It makes no sense!” versus history

There’s no channel 1 on televisions in North America.

It makes no sense.

That is, it makes no sense from the point of view of an engineer that had to design a channel system today, starting from scratch.

It makes sense from the point of view of a historian examining how broadcasting developed in North America.

Sometimes, discussions about academic systems of various sorts feel like people complaining mightily about how stupid it is that there is no channel 1, and proposing fix after fix after fix to correct it. And they do so in an environment where lots of people aren’t bothered by the lack of channel 1. And they do so even if the proposed fixes will mean some people’s televisions won’t work any more.

“Sure, but they’ll be better televisions!” Maybe, but it misses that a consistent channel numbering system is not what most people want out of a television.

03 April 2018

The NSF GRFP problem continues

This morning, a fine scientist congratulated two undergraduates in her lab about winning National Science Foundation (NSF) Graduate Research Fellowship Program (GRFP) awards. I thought, “Huh. They’re out? And two seems like a lot from one lab.”

A few years ago, Terry McGlynn wrote an important blog post about how tilted the playing field is for the NSF GRFP awards. He compared awards to Harvard students (with about 7,000 undergraduates) to the more than 20 campuses in the California State University system (over 400,000, according to a check of Wikipedia).

The NSF is good about making it easy to find a list of all 2,000 awards in this program. I went looking for the same comparison of one Ivy League university to an entire state’s system. Embarrassingly, I screwed up the calculation on the first pass, not realizing that several California State universities don’t say “California State” in their name, unlike the University of Texas institutions.

Harvard got 43, and all of California State get 50 (thanks to Terry for counting here and here).

Cal Poly Pomona 4
Cal Poly SLO 5
CSUCI 1
CSUDH 1
CSU Fresno 1
CSU Fullerton 8
CSULB 2
CSULA 1
Sac State 1
CSUSB 1
CSUN 5
CSUSM 3
SDSU 6
SFSU 6
SJSU 3
Humboldt State 2

So one lab in Harvard alone equaled the entire combined output of eight different California State universities (separately, not combined).

If this sort of pattern intrigues you, you must for to Natalie Telis’s post where she digs down into the numbers. Not just this year’s, but over 28,000 awardees worth of data, from 2011 to 2017. It’s bloody brilliant. One of her first points is, “The most expensive undergraduate schools have an extreme excess of (NSF GRFP) recipients.” She also makes some comments on Twitter about this.

I can’t wait to see what she finds for 2018 data.

Matt Cover did some similar things the previous year, and found no relationship between institutional enrollment and number of grants.

External links

NSF Graduate Fellowships are a part of the problem
The price of a GRFP, part 1
Matt Cover thread from 2017

28 March 2018

Innovation must be accompanied by education


When Apple launched the iPod, the company had to put a lot of effort into educating people about digital music.

Mr. Jobs pulled the white, rectangular device out of the front pocket of his jeans and held it up for the audience. Polite applause. Many looked like they didn't get it.

That was just fine with Mr. Jobs. They'd understand soon enough.

Apple had to inform the mass market that digital downloads could be legal (remember Napster?). They had to let people know how much music you could have with you. They had to let people know about the iTunes store. Without all those pieces of the puzzle, the iPod would have tanked.

I was reminded of these scene when Timothy Verstynan asked:

Why can’t we have a scientific journal where, instead of PDFs, papers are published as @ProjectJupyter notebooks (say using Binders), with full access to the data & code used to generate the figures/main results? What current barriers are preventing that?

I follow scientific publishing at a moderate level. I write about it. I’m generally interested in it. And I have no idea what Jupyter notebooks and binders are. If I don’t know about it, I can guarantee that nobody else in my department will have the foggiest idea.

This is a recurring problem with discussions around reforming or innovating in scientific publishing. The level of interest and innovation and passion around new publication ideas just doesn’t reach a wide community.

I think that this is because those people interested might undervalue the importance of educating other scientists about their ideas. Randy Olson talks a lot about how scientists are cheapskates with their communications budgets. They just don’t think it¤s important, and sassume the superiority of the ideas will carry the day.

I’ve talked with colleagues about open access many times, and discover over and over that people have huge misconceptions about what open access is and how it works. And open access is something that has been around for a decade and has been written about a lot.

Publishing reformers drop the iPod, but don’t do the legwork to tell people how the iPod works.

So to answer Timothy’s initial question: the current barrier is ignorance.

27 March 2018

What defines a brain?

A side effect of my bafflement yesterday over how lobsters became some sort of strange right-wing analogy for the rightness of there being winners and losers (or something) was getting into a discussion about whether lobsters have brains.

That decapod crustaceans are brainless is a claim I have seen repeated many times, often in the service of the claim that lobsters cannot feel pain. This article, refuting Jordan Peterson, said:

(L)obsters don’t even have a brain, just an aglomerate of nerve endings called ganglia.

This is a bad description of ganglia. It makes it sound like there are no cell bodies in ganglia, where there usually are. Here are some. This is from the abdominal ganglion of Louisiana red swamp crayfish (Procambarus clarkii):


These show cell bodies of leg motor neurons from several species (sand crabs and crayfish, I think; these pics go back to my doctoral work).


These are neurons in a ganglion from a slipper lobster (Ibacus peronii), where those big black cell bodies are very easy to see:


And these are leg motor neurons in slipper lobster:


And there is substantial structure within that alleged “not a brain” in the front:



And we’re know this for well over a century, as this drawing from 1890 by master neuroanatomist Gustav Retzius shows:



So ganglia are more than “nerve endings.” So putting that aside, are there other features that make brains, brains?

Intuitively, when I think about brains, I think of a few main features. Two anatomical, and one functional:

  1. Brains are big, single cluster of neurons. Even though there may be many neurons in, say, the digestive system (and there are not as many as some people claim), it’s so diffuse that nobody would call it a brain.
  2. It’s in the head, near lots of sensory organs. In humans, our brain is right next door to our eyes, ears, nose, and mouth, which covers a lot of the old-fashioned senses.
  3. It’s a major coordinating center for behaviour.

Decapod crustaceans (not to mention many other invertebrates) meet all those criteria. Sure, the proportion of neurons in the decapod crustacean brain may be smaller than vertebrates, but I have never seen a generally agreed upon amount of neural tissue that something must have to be a brain instead of a “ganglion in the front of the animal.”

I have a sneaking suspicion that some people will argue that only vertebrates can have brains because we are vertebrates, and vertebrates must be special, because we are vertebrates. That is, people will define brains in a way to stroke human egos.
 And, as I implied above, some people make the “no brains” claim out of self-interest. I don’t think it’s any accident that I see “lobsters don’t have brains” coming from institutes that have close ties to commercial lobster fisheries.

I suppose that some could argue that limiting the word “brain” to vertebrates is a way of bringing recognizing that vertebrate and invertebrate nervous systems are structured very differently. They are, but why only do this for one part of the nervous system? This is a little bit like saying “invertebrates don’t have eyes,” because they have compound eyes instead of our camera-style eyes. We routinely give things in invertebrates and vertebrates the same names if they have the same functions.

And in practice, I see people referring to octopus brains all the time. They do so even though, like other invertebrates, a large proportion of the nervous system sits outside the brain. From memory, roughly half the neurons in an octopus reside in its arms.

In practice, I am far from the only person that calls the clump of neurons at the front end of decapod crustaceans, “brains.” From this page:


So, fellow neuroscientists, if you don’t think invertebrates can have brains, why not? What is your dividing line?

Hat tip to Hilary Gerstein.

26 March 2018

I was unaware of how lobsters got sucked into an all-encopassing conspiracy theory

Miriam Goldstein and Bethany Brookshire burst my cosy bubble of ignorance. Today I learned  Jordan Peterson, a current darling of conservatives, drags lobsters into his mish-mash of writings to make white dudes feel good about themselves. Allow me an extended quote from this Vox article:

The book is a kind of bridge connecting his academic research on personality and his political punditry. In it, Peterson argues that the problem with society today is that too many people blame their lot in life on forces outside their control — the patriarchy, for example. By taking responsibility for yourself, and following his rules, he says, you can make your own life better.

The first chapter, about posture, begins with an extended discussion of lobsters. Lobster society, inasmuch as it exists, is characterized by territoriality and displays of dominance. Lobsters that dominate these hierarchies have more authoritative body language; weaker ones try to make themselves look smaller and less threatening to more dominant ones.

Peterson argues that humans are very much like lobsters: Our hierarchies are determined by our behaviors. If you want to be happy and powerful, he says, you need to stand up straight:

If your posture is poor, for example — if you slump, shoulders forward and rounded, chest tucked in, head down, looking small, defeated and ineffectual (protected, in theory, against attack from behind) — then you will feel small, defeated, and ineffectual. The reactions of others will amplify that. People, like lobsters, size each other up, partly in consequence of stance. If you present yourself as defeated, then people will react to you as if you are losing. If you start to straighten up, then people will look at and treat you differently.

“Look for your inspiration to the victorious lobster, with its 350 million years of practical wisdom. Stand up straight, with your shoulders back,” he concludes, in one of the book’s most popular passages.

The lobster has become a sort of symbol of his; the tens of thousands of Peterson fans on his dedicated subreddit even refer to themselves as “lobsters.”

This is classic Peterson: He loves to take stylized facts about the animal kingdom and draw a one-to-one analogy to human behavior. It also has political implications: He argues that because we evolved from lower creatures like lobsters, we inherited dominance structures from them. Inequalities of various kinds aren’t wrong; they’re natural.

“We were struggling for position before we had skin, or hands, or lungs, or bones,” he writes. “There is little more natural than culture. Dominance hierarchies are older than trees.”

Foul!


The logical fallacy is appeal to nature.

As analogies go, comparing humans to lobsters is... not a good analogy. This article provides a pretty good response, so I don’t have to. (Though I say lobsters have brains. But that doesn’t detract from the main points.)

External links


Psychologist Jordan Peterson says lobsters help to explain why human hierarchies exist – do they?

20 March 2018

The impossibility of species definitions


Sad news about the death of Sudan, the last northern male white rhino, prompted some discussion about whether the northern white rhino is a species or a subspecies. The TetZoo blog has a nice look at this specific issue. I’d like to take a broader look at the whole problem of why defining species is so hard.

Arguing over what defines a species is a long-running argument in biology. It’s practically its own cottage industry. There is much effort to define species precisely, for all sorts of good reasons. And that desire for clear, precise definitions often appears on websites like Quora. Questions come up like, “If Neanderthals bred with us, doesn’t that mean, by definition, they are the same species?”

But as much as we want clear definitions in science, there is a problem. You can’t always draw sharp dividing lines on anything that is gradual. (Philosphers know this as the continuum fallacy.)
To demand a precise definition of species is like demanding to know the precise moment that a man is considered to have a beard. For instance, I think we can agree that Will Smith, in this pic from in After Earth (2013), does not have a beard:


And that in Suicide Squad (2016), Smith pretty clearly does have a beard:


But does Smith have a beard in this pic? Er... there’s definitely some facial hair there.


What is the exact average hair length that qualifies a man to be “bearded”?There isn’t one. But that doesn’t mean that you can’t meaningfully distinguish After Earth Smith from Suicide Squad Smith.

It’s a problem that Charles Darwin recognized. In Darwin’s view, speciation was going to result from the slow, gradual accumulation of tiny, near imperceptible changes. Darwin recognized that speciation was a gradual process, and he  frequently made the point that “varieties” could be considered “incipient species.” At any given point in time, some groups would be early in that process of divergence, and some would be further along.

That’s why we shouldn’t expect there to be clear, consistent species definitions that apply across the board and are helpful in every case.
External links

The last male northern white rhino has died
How Many White Rhino Species Are There? The Conversation Continues

16 March 2018

The last round of the year

Reason I love the AFLW competition, number 2,749:

Going into this last round of the home and away season, five out of eight teams had a shot at the grand final. And no team was guaranteed a slot in the grand final.

And the mighty Demons are well placed to be one of the two teams in the final. Go the Dees!

It's going to be a series of nail-biting games, and I love it.

13 March 2018

“Mind uploading” company will kill you for a US$10,000 deposit, and it’s as crazy as it sounds

Max Headroom was an 1980s television series that billed itself as taking place “20 minutes into the future.” In 1987, its second episode was titled, “Dieties”. It concerned a new religion, the Vu-Age church, that promised to scan your brain and store it for resurrection.

Vanna Smith: “Your church has been at the forefront of resurrection research. But resurrection is a very costly process and requires your donations. Without your generosity, we may have a long, long wait... until that glorious day... that rapturous day... when the Vu-Age laboratories perfect cloning, and reverse transfer.”

That episode suddenly feels relevant now, although it took a little longer tan 20 minutes.

On Quora, which I frequent, I often see people asking about mind uploading. My usual response is:


So I am stunned to read this article about Nectome, which, for the low deposit price of US$10,000, will kill you and promise to upload your mind somewhere, sometime, by a process that hasn’t been invented yet.

If your initial reaction was, “I can’t have read that right, because that’s crazy,” you did ready it right, and yes, it is crazy.

In fairness, it is not as crazy as it first sounds. They don’t want to kill you when you’re healthy. They are envisioning an “end of life” service when you are just at the brink of death. This makes it moderately more palatable, but introduces more problems. It’s entirely possible that people near the end of life may have tons of cognitive and neurological problems that you really wouldn’t want to preserve.


How do they propose to do this? Essentially, this company has bought into the idea that everything interesting about human personality is contained in the connectime:

(T)he idea is to retrieve information that’s present in the brain’s anatomical layout and molecular details.

As I’ve written about before, the “I am my connectome” idea is probably badly, badly wrong. It completely ignores neurophysiology. It’s a selling point for people to get grants about brain mapping, and it’s a good selling point for basic research. But as a business model, it’s an epic fail.

And what grinds my gears even more is that this horrible idea is getting more backing that many scientists have ever received in their entire careers:

Nectome has received substantial support for its technology, however. It has raised $1 million in funding so far, including the $120,000 that Y Combinator provides to all the companies it accepts. It has also won a $960,000 federal grant from the U.S. National Institute of Mental Health for “whole-brain nanoscale preservation and imaging,” the text of which foresees a “commercial opportunity in offering brain preservation” for purposes including drug research.

I think it is good to fund research of high speed analysis of imaging of synaptic connections. But why does this have to be tied to a business? Especially one as batshit crazy as Nectome?

Co-founder Robert McIntyre says:

Right now, when a generation of people die, we lose all their collective wisdom.

If only there was some way that people could preserve what they thought about things... then we could know what Artistotle thought about stuff. Oh, wait, we do, it’s called, “writing.”

I can’t remember the last time I saw a business so exploitative and vile. And in this day and age, that’s saying something.

Update, 3 April 2018: MIT is walking away from its relationship with the company. Good. That said, Antonio Regalado notes:

Although MIT Media Lab says it’s dropping out of the grant, its statement doesn’t strongly repudiate Nectome, brain downloading idea, or cite the specific ethical issue (encouraging suicide). So it's not an apology or anything.

Hat tip to Leonid Schneider and Janet Stemwedel.

Related posts

Overselling the connectome
Brainbrawl! The Connectome review
Brainbrawl round-up

External links

A startup is pitching a mind-uploading service that is “100 percent fatal”

How many learning objectives?




I am teaching an online course this semester, and I had to undergo training and review of the class before it ran. In preparing it, one of the key things that the instructions stressed was the importance of having learning objectives.

All that material gave me good insight into how to write a single leaning objective, there was almost nothing about how to put them all together.
And right now I’m struggling with what a good number of learning objectives is. But so far, the only direct answer I’ve seen to that is:

How many learning outcomes should I have?
This is tied to the length and weight of the course
How many learning objectives should I have?
This is tied to the number of learning outcomes.


You’re not helping.

Most courses track lessons in some standard unit of time. A day. A week. Surely there has to be some sort of thinking about what a reasonable number of learning objectives is for a given unit of time. It’s probably not out of line for me to guess that one hundred learning objectives in a single day would be too much. On the other hand, a single learning objective for a week might be too low.

Right now, I have some weeks that have ten or more learning objectives. I’m wondering if that’s too much. And I’m just lost. I have no way of knowing.

It might sound it’s just a matter of looking at student performance and adjusting as you go. But in a completely online course, it is so hard to adjust. You have to prepare almost everything in advance, and you can’t easily go faster or slower in the way that you can when you meet students in person.

I’m not sure how much student feedback will help, because everyone’s tendency is probably to say, “Yes, give me fewer objectives so I have more time to master each one.” And sometimes students aren’t good at assessing what they need to learn.

Maybe this is a gap in the education literature that needs filling.

Picture from here.

12 March 2018

How anonymous is “anonymous” in peer review?

Last time, I was musing about the consequences of signing or not signing reviews of journal articles. But I got wondering just how often people sabotage their own anonymity.

As journals have moved to online submission and review management systems, it’s become standard for people to be able to download Word or PDF versions of the article they are reviewing.

The last article I reviewed was something like 50 manuscript pages. There was no way I was going to write out each comment as "Page 30, paragraph 2, line 3," and make a comment. I made comments using the Word review feature. And all my comments had my initials.

As more software uses cloud storage for automatic saving features, more software packages are asking people to create accounts, and saving that identifying information along with documents. Word alerts you with your initials, but Acrobat Reader's comment balloons are little more subtle.

Ross Mounce and Mike Fowler confirmed that this happens:

Yep. Metadata tags are great. 😀 Even simply the language setting can be a giveaway: Austrian English is a huge clue in a small field [real, recent example!]. "Blind" peer review is not always effective...

Having wondered how often authors do this, I wonder if editorial staff ever check to make sure reviewers don’t accidentally out themselves.

Picture from here.

03 March 2018

Signing reviews, 2018

Seen on Twitter, two days apart.

First, Kay Tye:

Dear everyone! You don’t need to wonder if I reviewed your paper anymore. I now sign ALL of my reviews.
Inspired by @pollyp1 who does this and I asked her why and she said “I decided to be ethical.” I do it to promote transparency, accountability and fairness. #openscience

I particularly noted this reply from Leslie Vosshall: (the “@pollyp1” mentioned in the prior tweet).

Open peer review would instantly end the dangerous game of “guess the reviewer.” This happens all the time with senior people guessing that some junior person trashed their paper and then holding grudges. But usually they guess wrong and inadvertently damage innocents.

Second, one day later, Tim Mosca:

Since becoming an assistant prof, I’ve reviewed ~ 12 papers. Signed one. Received a phone call from the senior (tenured) author asking, “Who do you think you are to make anything less than glowing comments?” So there are still dangers for young, non-tenured profs when reviewing.

The threads arising from these tweets are well worth perusing.

I’ve signed many reviews for a long time, and nothing bad has happened. I used to be much more in favour of everyone signing reviews, but long discussions about the value of pseudonyms on blogs, plus the ample opportunity to see people behaving badly on social media, significantly altered my views. But the problem is that everyone will remember a single bad story, and not pay attention to the many times where someone signed a review and everything was fine. Or cases where something positive came out of signing peer reviews.

How can we weigh the pros of transparency with the cons of abuse? I don’t know where that balance is, but I think there has to a some kind of balance. But the underlying issue here is not signing reviews, but that people feel they can be vindictive assholes. Univeristies do not do enough to address that kind of poor professional behaviour.

19 February 2018

Once around the earth

Gordon Pennycook asked how far people have moved in pursuit of their academic careers. I’d never added it up before. I found an online distance calculator, and off I went.

From my high school town of Pincher Creek, Alberta to the University of Lethbridge for my bachelor’s degree: 100 km

From Lethbridge to the University of Victoria for my graduate work: 1,268 km (driving)

From Victoria to Montreal for my first post-doc: 4,732 km (driving)

From Montreal to Melbourne, Australia for my second post-doc: 16,755 km

From Melbourne to Pincher Creek, for a brief period of unemployment: 13,874 km

From Pincher Creek to Edinburg, Texas to start my tenure-track position: 3,476 km

And from Edinburg to an undisclosed location, where I am on leave: 3,090 km

Grand total: 45,295 km! For comparison, the circumference of the Earth is 40,075 km.

You may now judge me on my carbon footprint. I would hate to start adding in the miles for conferences on top of that.

06 February 2018

Tuesday Crustie: Know your Lamingtons

Canada has butter tarts. Australia has lamingtons.


But because Autralia is the lucky country, it not only has lamingtons as dessert, but Lamington as a bad ass crayfish:


I loved this description (my emphasis):

One of Australia's most unusual creatures, the Lamington spiny crayfish, lives there and has been known to startle bushwalkers by confronting them in battle stance, clicking claws and warning hiss.

It’s like this crayfish is trying to live up to this description of Australia from Douglas Adams:

Australia is like Jack Nicholson. It comes right up to you and laughs very hard in your face in a highly threatening and engaging manner.

External links

Feisty crayfish surprise in rainforest

Dessert pic from here; crayfish pic from here.

05 February 2018

The economy of crayfish


While searching for crayfish news (as you do), I stumbled across this description of the value of crayfish.

  • Crayfish are the most popular dish in China.
  • Crayfish support five million jobs in China.
  • Crayfish are a US$22 billion market in China.

Besides the size of the market, I am surprised because I am willing to bet that it is all invasive species, Louisiana red swamp crayfish, Procambarus clarkii. That’s what the pictures look like, anyway.

This shouldn’t surprise me, considering I remembered this from an article about crayfish in CHina from years ago.

This novel perspective on invasive species was perhaps most elegantly stated as we made small talk with a taxi driver in Wuhan. As we explained our research through an interpreter, the taxi driver smiled and asked, “Can they really be considered a problem if people eat them?"

Yet somehow, I doubt most people would be able to guess just how much money there is in crayfish in this one country. This page (dated 2012) estimates that in Louisiana, one of the biggest American producers of crayfish (hey, it is the Louisiana red swamp crayfish) :

The total economic impact on the Louisiana economy exceeds $300 million annually, and more than 7,000 people depend directly or indirectly on the crawfish industry.

External links

Crayfish was China's most popular dish in 2017
China's crazy love for crayfish created jobs for 5m in 2016
Louisiana Crayfish: Good, Bad and Delicious

Picture from here.

29 January 2018

Goodbye, Storify


Storify is shutting down soon. Which is a shame. There was a point where I, and others, were using is a lot. It was a nice way to compile lots of internet resources into a single coherent timeline.

This has some relevance to matters of scientific publishing. On lots of sites like Quora, I see variations of, “Why can’t scientific articles be free to read?” Heck, here are some:


Online services — like Storify — may contribute to the lack of understanding that publishing is not free, regardless of whether the reader pays or not. They make stories, it costs them only a sign-up information, and they wonder why scientific publishing can’t be the same.


People do not understand that services that are called “free” are only free to them, not free across the board. Someone is paying bills. Preprint servers get millions of dollars in support to keep them running.
 
Or, you have operations that are not able to make a go of it, and close up shop, like Storify is now doing. Or like Google Reader did. (That one still makes me sad.)

The closing of Storify shows one of the reasons “free” is not a good way to think about scientific publishing. “Free to read,” sure. But as much as I love me some free to user online services (like Blogger, which has powered my writing here for over a decade and a half), they’re not a good model for scholarly publication.

I am playing with Wakelet as a replacement for Storify.

Hat tip to Carl Zimmer for the news about Storify.

19 January 2018

Switzerland’s lobster laws are not paragons of science-based policy


What are you thinking, Switzerland?

At the start of this week, I saw a news story about new Swiss regulations for the handling and killing of lobsters. (Coincidentally, it came very shortly after this very good article about similar issues around fishes.) This started with a motion by Green Party politician Maya Graf. She wanted to ban lobster imports into Switzerland outright, but Switzerland already had a trade agreement with the European Union that ruled that out.

This is the short version of the Swiss law (auto-translated from German):

The lobster is better protected in the future

Lobster and other crayfish may no longer be transported on ice or in ice water. This is important for the import to Switzerland. All species living in water must always be kept in their natural environment - this also applies to the lobster. In addition, crayfish must be stunned before being killed. The usual dipping in the gastronomy not stunned lobster in boiling water is therefore no longer permitted.

Further information: Articles 23 (1), 178 and 178a of the Animal Welfare Ordinance .

 A Q and A document says:

New scientific evidence shows that crayfish are just like vertebrates, sentient and capable of suffering.

But it does not summarize what scientific evidence was examined and used to justify this decision. However, the Swiss website links to a document from the Australian Royal Society for the Prevention of Cruelty to Animals (RSPCA), which implies they agency agrees with the material contained within. The RSPCA document does have a reference list of research papers, with the most recent references dating to 2015.

The RSPCA document is not intended to be a scientific literature review. But that it does cite scientific papers can give an impression of greater certainty and consensus in the scientific community than is perhaps warranted.

For context, and in the interests of full disclosure, there are very few research groups have published empirical behavioural data about crustacean noceiception. One is led by Roger Elwood, and another is led by me. There are a few other papers from other places.

First, two research labs is a small fraction of the crustacean research community. Even if those two labs were entirely in agreement about the data (the two labs have contradictory results on one effect) and the interpretation of those data, two labs should not be taken to represent a broad scientific consensus. A 2014 book on crustacean nervous systems and behaviour alone has somewhere around 30 authors, none of which are from the two labs I mentioned.

Second, the RSPCA document cites only Elwood’s papers. (In fairness, the most relevant paper I co-authored on this subject was in 2015, the same year as the newest paper in the RSPCA document. That paper may have been too new to make it into the RSPCA document.)

Third, not all researchers examining the data are in agreement, even those with expertise in the relevant issues. In her book Can Fish Feel Pain? (reviewed here), Victoria Brathwaite describes having long conversations with Elwood about this topic. Despite Elwood’s arguments, Braithwaite concluded that lobsters do not feel pain. Joe Ayers (who was an examiner on my Ph.D.) also disagrees.

Fourth, the papers cited by the RSPCA do not claim that lobsters (and other large decapod crustaceans) are sentient, nor do they claim that they suffer. The papers are appropriately cautiously worded, and say the results are consistent with crustacean pain. Elwood has said this when speaking to scientists. “Consistent with” means “not ruled out.” It doesn’t necessarily mean likely. But when speaking to the general press, Elwood has said lobsters probably feel pain. As quoted above, the Swiss Q and A goes even further and says lobster pain has been shown.

And thus do we move from “possible” in data, to “probable” in the public eye, to “definite” in law.

The specifics of the policies are also puzzling. It forbids lobsters from being transported on ice. It is not clear in my translation (“Direct contact with ice or iced water can cause cold in the animals damage arises.”) if this is because of concerns about “pain”. A paper I co-authored in 2015 that showed crayfish do not avoid very low temperature stimuli.

The law seems to require that lobsters and crayfish are anaesthetised before being killed (Google translates the word as “stunned,” but this doesn’t seem to refer to electrical stunning). But when you ask crustacean biologists how to aneasthetize crustaceans, one common answer is, “Put them on ice.” Even the Q and A recommends cooling lobsters before killing them. It’s not clear why cooling is recommended but ice is illegal.

I don’t agree with this article that mocks the Swiss law, saying:

(T)here’s no scientific evidence to support the position.

The material quoted as being from the Lobster Institute is, like the Swiss law, far more confident than the data suggests. The article pulls out the “lobsters have no brain” myth. We have known for more than a century they do have brains. Absolutely nobody knows what the minimal amount of nervous system is for generating “pain.”

The recommendations for killing lobsters in the RSPCA document are generally consistent with what I do when using decapod crustaceans for research. (Image also shows up here.) The image at the top of this post shows how I was taught to sacrifice decapod crustaceans in a humane way. It is not the only way, but I think it is reasonable and fairly easy.

I agree with the goals of this law. You should be careful in handling and killing animals rather than careless. But it’s not a strong model for science informing policy.

P.S.—One interesting tidbit I learned in perusing the Swiss documents is that Crustastun (which I wrote about eight years ago; see also here) makes no equipment, according to the Swiss Q and A document.

Related posts

What we know and don’t know about crustacean pain
Crustacean pain is still a complicated issue, despite the headlines

External links

Revision of various regulations in the veterinary field (Hat tip to Taking Apart Cats on Twitter)
Questions and answers about lobster (PDF in German)
Humane killing and processing of crustaceans for human consumption (PDF in English)
Swiss ban against boiling lobster alive brings smiles — at first
Do lobsters feel pain when we boil them alive? (Contains earlier version of image I created from top of page.)
Switzerland bans boiling lobsters alive, grants other protections to the crustaceans
Lobsters 'very likely' feel pain when boiled alive, researcher says
Fish feel pain. Now what?
Science Pushed to Back Burner, as Swiss Outlaw Live Lobster Boiling
Another country has banned boiling live lobsters. Some scientists wonder why.
Switzerland rules lobsters must be stunned before boiling
The Swiss Consider the Lobster. It Feels Pain, They Decide.