2019-09-22

Words for the word god

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He moves in darkness as it seems to me, Not of woods only and the shade of trees.

A three part article, you lucky people. We start with IAMs: oh no, not again (time and again I tell myself I'll stay clean tonight). Kevin Anderson - yes, I fear it is him again - rails that IAMs professionalized the analysis of climate-change mitigation by substituting messy and contextual politics with non-contextual mathematical formalism. ZOMG! "professionalised" used an insult. He'll be telling us that we don't need no steenkin' experts next. But there's a clue to his thinking there: he doesn't like the answers from the IAMs, and wants to wish them away. Rather like the Watties, who don't like the answers from the GCMs and want to wish them away. [Update: note that ATTP has an IAMs article; I'm in the comments.]

Nurture's lead in to the "debate" (not a debate; just two different views) is rather useful, if you read it carefully:
global warming... is one of the greatest threats facing humanity today...It is a complex issue that involves many social, technological and physical processes. To describe the intricate relationships between these processes, scientists have devised computer simulations known as integrated assessment models (IAMs). IAMs are used to generate pathways for climate-change mitigation that are consistent with global temperature targets. Some scientists have suggested that IAMs are no longer fit for purpose and that meeting climate targets will require a radical reinvention of industrial society that the models are not equipped to address.
The key word in there is consistent which "messy and contextual politics" very much isn't. KA's preferred messy stuff is a way of wishing away problems by preventing a consistent view. This is the epicycles stuff all over again. The IAMs are a way of keeping you honest; you can't ask for inconsistent things. To assert that For more than two decades, IAMs have been part of this accelerating failure [to tackle GW] is drivel; that's about as sensible as blaming GCMs for "failing to solve" the problems they show. Ultimately, none of this matters to KA, because he already knows that what is required is immediate and radical change across all facets of society. And so we're back to GND-ery. I don't think people like KA can talk clearly about "the current economic system". If he means overthrowing capitalism, he can fuck off. If he means replacing the current fossil fuel infrastructure with something that doesn't fill the atmosphere with CO2, then there's a conversation to be had, if he can avoid pre-judging how to do it. Pretending they are the same thing, or failing to clearly distinguish them, is going to lead to confusion.

For part two, Twatter again offers a thing, Vaclav Smil: ‘Growth must end. Our economist friends don’t seem to realise that’. It's a fawning2 interview with a guy with a book to sell. We start with the familiar (and probably wrong; depending on how he is defining things; being a Graun article, things are of course not defined): one crystal clarity: that growth must come to an end. Our economist friends don’t seem to realise that... The economists will tell you we can decouple growth from material consumption, but that is total nonsense. But at least it's nice of him to make it clear that he isn't an economist. Some things I at least half agree with: We could halve our energy and material consumption and this would put us back around the level of the 1960s. We could cut down without losing anything important. Life wasn’t horrible in 1960s or 70s Europe. I don't mean the longing for the goode olde dayes (stuff like We are buried under information. It’s not doing anyone any good. makes me think he does so long); I just mean that we could all live simpler lives and be happier. I certainly can't argue with his We are so fat in terms of material consumption. What's quite absent, though, is any suggestion of how to sell that to the masses. I don't think you can. He has no ideas: in reply to How do we move in that direction before the risks become unmanageable? he offers In some places we have to foster what economists call de-growth. In other places, we have to foster growth. This is not an answer, it is an evasion; neither he not his interviewer nor apparently the Graun;s editor seem to realise this.

And part three (and last, you'll be relieved to know): Stop obsessing over your environmental “sins.” Fight the oil and gas industry instead by Mary Annaise Heglar. In Vox, so probably wrong. People are struggling to work out what they should tell people to "do" about GW. There are two obvious temptations: to tell people to clean up their own act - aha, but then that "guilts" people and that's "bad" - or to blame "someone else" which is stupid and leads to people doing nothing. But seems to be where she's going: We need to let go of the idea that it’s all of our individual faults, then take on the collective responsibility of holding the true culprits accountable. But the point is that the composite of all our individual faults is the "true culprit". We are the people emitting CO2. Not fossil fuel companies; they just supply it. They supply it because we buy it. If we stopped buying it, they'd stop supplying it. Markets work like that (unlike, say, the German govt, which is ramming lignite down its citizens throats even though they don't want it3). When suggesting non-personal action the article rapdidy runs off the rails: Organizing neighbors to sue a power plant that’s poisoning the community is a personal action. Yes, but it's also irrelevant: CO2 is not a poison in that sense. Efforts to sue against CO2 are generally stupid and failing. And at the end the article rather than running off the rails just runs into the sand: All I need you to do is want a livable future is sweet, but not actionable1.

While I'm on that article, it has more wrongness, for example Once upon a time, perhaps, we needed a strong grasp of science to understand climate change, but now all we have to do is look at the daily headlines — or out our windows. This isn't true. Understanding GW takes just as much science now as it ever did. Perhaps the author means understanding the importance of GW. That, now, is commonplace in headlines. But cannot be seen out of the window, of course.

Notes


1. You might reasonably ask what my brilliant plan to save the world it. If anyone is kind enough to actually do this, I'll probably write a post on it. But in brief it is (a) education and (b) impose carbon taxes instead and hope that solar photovoltaic saves us.

2. You doubt me? How about You are the nerd’s nerd. There is perhaps no other academic who paints pictures with numbers like you. You dug up the astonishing statistic that... Your one-man statistical analysis is like the entire output of the World Bank.

3. Struck, because probably wrong. Hard coal was subsidised; it looks like lignite probably wasn't.

Refs


* Quiggin Needs a Third Lesson by David Henderson

12 comments:

Victor Venema said...

What is your interesting plan to save the world?

"Markets work like that (unlike, say, the German govt, which is ramming lignite down its citizens throats even though they don't want it)."

When I was young the electricity sector, as a natural monopoly, was public. But in the neo-liberal age the sector has been privatised. I presume the same happened in Germany. At least now they are private.

So these are private companies selling their power to everyone who is willing to pay its price. (Not me, I get green power). Libertarians should really stop calling everything they do not like "the government".

David Appell said...

Re #3: I don't think it's as simple as people demand FFs so companies supply that market.

Fossil fuel companies have time and again sought to deny climate change, fund politicians to deny climate change, tried to kill public transportation in the US, and to kill renewable technologies -- see: Who Killed the Electric Car or the current attempt in Colorado to stop the government from publicly funding recharging stations.

https://www.hotcars.com/oil-industry-attempts-to-quash-the-growing-electric-car-movement/

In a few US states it's not legal to sell a car unless you have dealerships in the state.

And so on. It's not a level playing field and the energy market isn't a free market.

izen said...

@-WC
" he doesn't like the answers from the IAMs, and wants to wish them away. Rather like the Watties, who don't like the answers from the GCMs and want to wish them away."

This may be a false equivalence.
Watties reject GCM results because of the implications for fossil fuel use, and the business model that drives it is threatened. Their objections to the underlying science of the modelling process are invariably unfounded.

But many distrust the answers from IAMs because they rely of reified mathematical formalism to simulate socio-economic processes that have shown little skill and a susceptibility to predict large differences depending on small changes in the assumptions made about growth and discount rates.
Do you know if IAMs can successfully hindcast?

William M. Connolley said...

> the German govt, which is ramming lignite...

I thought that was uncontroversial; https://www.cleanenergywire.org/factsheets/when-will-germany-finally-ditch-coal for example tells me "Germany’s hard coal production fell almost 90 percent between 1990 and 2013 and has long been propped up state subsidies" although that's about hard coal, not lignite. https://www.bmwi.de/Redaktion/EN/Artikel/Energy/coal.html rather suggests that lignite isn't subsidised, so I'll strike my probable error.

William M. Connolley said...

> Fossil fuel companies have time and again sought to deny climate change

Yeeees, although they have also time and again admitted GW; for example, Alsup.

> In a few US states it's not legal to sell a car unless you have dealerships in the state.

That's a problem with your laws and your pols.

> the energy market isn't a free market.

That also sounds like political interference.

> may be a false equivalence

It is more of an analogy than equivalence; don't expect it to be exact. But false? I think "unpleasant" would be closer.

> predict large differences depending on small changes in the assumptions made about growth and discount rates

But if you model growth as exp, and take a 2% factor for one and 3% for the other, you *will* end up with large differences. That's just how it goes. I don't see that as an error.

I'm not sure hindcasting makes sense. At least in my mind, IAMs aren't for forecasting. They're just there to tell you the consequences of your assumptions.

...and Then There's Physics said...

I'm not sure hindcasting makes sense. At least in my mind, IAMs aren't for forecasting. They're just there to tell you the consequences of your assumptions.

I'm not sure I'm quite getting what you're saying, but if IAMs simply allow you to develop some kind of model with a set of assumptions and then test how your model respond to perturbations, it's still worth trying to see how well this model represents reality. Maybe in this context hindcasting is indeed difficult, but that may then indicate that it is very difficult to model these kind of socio-economic systems and that we should be very cautious in how we interpret the results from these kind of models.

William M. Connolley said...

> it's still worth trying to see how well this model represents reality

Yes in principle. And I may just be showing my ignorance of IAMs (your post mentions two sorts in an update and I'm not even sure which type I'm talking about). But IAMs intrinsically can't predict the actual pattern of economic events - e.g. the so-called Great Depression of 2008 - any more than GCMs can predict actual ENSO evolution. Nor, obviously, can they predict policy changes. But they can give you some idea about what effects policy changes would have.

...and Then There's Physics said...

I'm talking about). But IAMs intrinsically can't predict the actual pattern of economic events - e.g. the so-called Great Depression of 2008 - any more than GCMs can predict actual ENSO evolution.

Except, I think that the ENSO behaviour will emerge from GCMs (maybe AOGCMs, rather than simply GCMs) even though they can't actually predict when precisely events will happen. I'm not sure that economic models get close to predicting the pattern of economic events, at least not in the sense of these being emergent phenomena from some kind of self-consistent model. Of course, economists may be able to say something about what type of behaviour increases the risk of some kind of economic event, but I'd be surprised if the models were close to saying anything about the pattern of such events.

William M. Connolley said...

I think that's right: they only predict steady / smooth behaviour; "shocks" to say GDP are only in there insofar as they affect the long-term average of GDP growth, and so are effectively parameterised as that.

Tom said...

WMC, one thing you say aroused my nit-picking antennae:

"But the point is that the composite of all our individual faults is the "true culprit". We are the people emitting CO2. Not fossil fuel companies; they just supply it. They supply it because we buy it. If we stopped buying it, they'd stop supplying it. Markets work like that (unlike, say, the German govt, which is ramming lignite down its citizens throats even though they don't want it3)."

I don't think people care about the fuel. They want the power. Most, but not all, want it as cheap as possible. Certainly fuel is fungible for non-transportation issues, and large numbers have chosen more expensive alternatives to fossil fuels for electricity, transportation and water heating.

Phil said...

Ah yes, carbon taxes again.

https://www.bloomberg.com/opinion/articles/2019-09-25/carbon-taxes-won-t-do-enough-to-slow-global-warming

William M. Connolley said...

Thanks for the link. It seems similar to what I've seen before. From it,

"Taxes also fail to seize one of the biggest opportunities for emission reduction – technological switching. As writer Ramez Naam has pointed out, nudging companies to adopt carbon-free technologies – many of which are now cost-competitive with fossil fuels – can get much more bang for the buck than a tax."

seems foolish. If this tech is currently competetive, then a CT makes it more so, and people will adopt it sans nudge. And his ref is Twatter.

I find the argument that it isn't enough unconvincing; and the arument that it isn't the *first* thing to do (which he doesn't even begin to address) even less so.