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From the Rally for Sanity via salon.com via Vic Diesel
"Our greatest responsibility is to be good ancestors."
-Jonas Salk
willard: hello Dr. Tobiswillard's new status message - home 2:03 PMme: heywillard: ...how are you doing?me: A bit freaked outwillard: you deserve it, you know thatme: deserve to be freaked out?willard: yesyou should not have made two posts into oneme: agreebutI did break the icewillard: lolthat reminds me of my friendwho is still a virginme: got the serious people to say out loud what they have all been thinkingwillard: that's not the way to break the icea better way is to ask questionsJudith commits the same mistakeshe's not questioning the IPCCshe simply asserts that they goofedwhence all she criticizes is her own reading of what they sayme: well, the question is really what is making her tick; perhaps I shouldn't have raised it (I knew many would disapprove)to some extent I disapprove myselfwillard: i understand what you're trying to do, mtyou would sacrifice yourself to save usJC's not worth your Christian sacrificeme: I don't actually relish being crucifiedbut she's a big enough target to be worth taking a little damagewillard: i doubt itshe's a juniorshe can blame her inexperienceme: she is notwillard: you know what i meanme: she is the chairman of the atmospheric sciences department at a major universitywillard: yesme: if she were not, nobody would pay her the slightest attentionwillard: i agreebut that's not the way to take down a big bossyou have to show respectbow before the blowyou tried to beat a hand you don't knowif she can formalize what she means, you're deadme: well 1) James agrees with me that she can'tand James is the real expertwillard: i knowme: 2) if she does I capitulate, and she adds something to the arsenal of thoughtso at least there is a helpful resultwillard: your reputation will take hit pointsme: the chance that she has not made any error at all is zero, I thinkwillard: i understandstill, these are minor glitcheslookshe's commiting the hermeneutics fallacyme: too catholic for meyou must explainwillard: she's overinterpretingshe basically is criticizing one figurewhere they don't spell out what they really mean, formallyso, yes, she's right at least for saying that it's not formalizedand perhaps a bit inconsistentbutif formalizing is a problemthen she needs to offer out to do thathence the flagbut the flagis underspecifiedwhat's the logic behind it?me: worseit is inconsistently specifiedwillard: Nullius in Verba says it's Bayesianme: I haven't read NiV's position yetwillard: you still can understand what she means, can't you?me: Not in a consistent waywillard: if you can, say some: As James says"While it might be possible to reverse-engineer some semblance of sense into some of her statements regarding it, they are mutually incoherent"that statement by James is a very good summary of what I am sayingwillard: i knowme: It is not communication to use the same device to mean different things at different timeswillard: facing incoherence, one has a choiceasking questionspointing out the logical mishapsstaying respectfulif you do this like a gentlemanme: I will be ignoredwillard: she can't respond by saying you're a thugshe can't ignore logical arguments for longme: I can't be a thug. She's a department chairman. She has vastly superior powers to my own.willard: you are rough on herme: Yes. Rude.willard: you are judging herher personme: Yes. I am afraid you are right.I am sure she is a pleasant person.I hate to do this.But her behavior is so irresponsible that somebody needs to say it.And since I have less to lose than most, it might as well be me.willard: i understand, mtyou should call herit's important that it gets personalnow that it isonly live voice will make you feel what's she's up about...you want to know what she's looking for, aren't you?me: An interesting suggestionwillard: ask herme: I do not know that she would take the callwillard: yes, she wouldshe's a tough oneshe can manage confrontationshe won't be able to resist youpractice your texin accent and she'll understand that you mean wellno, let's not dreamat the very least, settle your different in a noble wayshare your mutual concernsyou can tell her things that won't get publishedTom will be furious if you can survive thisyou can't say that i don't have any argument thereme: I am not sure what objective I have in this proposed conversationwillard: 1. you mean well2. you wish to understand her pov3. you think that she lacks a sense of responsibilityyou can't say 1-2-3 over the internetzme: you just didwillard: chatting is not bloggingme: all I need is your permission to post the transcriptwillard: you have itme: cool.me: I don't know whether she thinks she is seriouseither a) she really thinks she is making a contribution to statistical reasoning or b) she is being cynicalwillard: cross out bme: I think a is vastly more likelybut others think otherwisewillard: she really is discovering quantified reasoningscientists are jejeune, sometimesme: under a we have a1) she is making some kind of sense but nobody with any basis in statistics can make any sense of it or a2) she is making no sense and thinks she iswillard: like athletes who have a big right armbut no legswhat i mean is the breadthof humanitiescharityshe just discovered Peirce!me: yes, she is amazingly naive sometimeswillard: that's how i portray scientistsme: but what is her strength?willard: she's naivebrings idealismforthrightnesspuritynobility of heartme: ah, yesI see what you are sayingwillard: revolutionaryme: she is a Shakespearean characterwillard: you have not reread Hamlet, haven't you?me: not recentlywillard: i told yaall is thereall is in Moby Dick tooanywayyes, she seems to believe that the IPCC is bullying away minoritarian standpointsme: whatever truth there may be to thatand there may be someher arguments make no sensewillard: lolyou can't criticize a nonsensical argument, michaelme: what does that mean?willard: you can only say it makes no sense
People are making an error common to those comparing science to commercial software engineering.In general this relates to the common error of people putting expectations from their own professional lives onto other disciplines, including the endlessly misplaced emphasis on frequentist reasoning in climate from engineers and MDs (Crichton and McIntyre both), or the desire for tight proofs from physicists (Dyson, Laughton, even Motl). In neither group is a "balance of evidence" argument useful, but that's how most of earth science works.
Research: *insight* is the primary product.
Commercial software development: the *software* is the product.
Of course, sometimes a piece of research software becomes so useful that it gets turned into a commercial product, and then the rules change.
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It is fairly likely that any “advanced version control system” people use has an early ancestor or at least inspiration in PWB/UNIX Source Code Control System (1974-), which was developed by Marc Rochkind (next office) and Alan Glasser (my office-mate) with a lot of kibitzing from me and a few others.
Likewise, much of modern software engineering’s practice of using high-level scripting languages for software process automation has a 1975 root in PWB/UNIX.
It was worth a lot of money in Bell labs to pay good computer scientists to build tools like this, because we had to:
- build mission-critical systems
- support multiple versions in the field at multiple sites
- regenerate specific configurations, sometimes with site-specific patches
- run huge sets of automated tests, often with elaborate test harnesses, database loads, etc.
This is more akin to doing missile-control or avionics software, although those are somewhat worse, given that “system crash” means “crash”. However, having the US telephone system “down”, in whole or in part, was not viewed with favor either.
We (in our case, a tools department of about 30 people within a software organization of about 1000) were supporting software product engineers, not researchers. The resulting *software* was the product, and errors could of course damage databases in ways that weren’t immediately obvious, but could cause $Ms worth of direct costs.
It is easier these days, because many useful tools are widely available, whereas we had to invent many of them as we went along.
By late 1970s, most Bell Labs software product developers used such tools.
But, Bell Labs researchers? Certainly no the physicists/ chemists, etc, an usually not computing research (home of Ritchie & Thompson). That’s because people knew the difference between R & D and had decent perspective on where money should be spent and where not.
The original UNIX research guys did a terrific job making their code available [but "use at your own risk"], but they’d never add the overhead of running a large software engineering development shop. If they got a bunch of extra budget, they would *not* have spent it on people to do a lot of configuration management, they would have hired a few more PhDs to do research, and they’d have been right.
The original UNIX guys had their own priorities, and would respond far less politely than Gavin does to outsiders crashing in telling them how to do things, and their track record was good enough to let them do that, just as GISS’s is. They did listen to moderate numbers of people who convinced them that we understood what they were doing, and could actually contribute to progress.
Had some Executive Director in another division proposed to them that he send a horde of new hires over to check through every line of code in UNIX and ask them questions … that ED would have faced some hard questions from the BTL President shortly thereafter for having lost his mind.
As I’ve said before, if people want GISS to do more, help get them more budget … but I suspect they’d make the same decisions our researchers did, and spend the money the same way, and they’d likely be right. Having rummaged a bit on GISS’s website, and looked at some code, I’d say they do pretty well for an R group.
Finally, for all of those who think random “auditing” is doing useful science, one really, really should read Chris Mooney’s “The Republican War on Science”, especially Chapter 8 ‘Wine, Jazz, and “Data Quality”‘, i.e., Jim Tozzi, the Data Quality Act, and “paralysis-by-analysis.”
When you don’t like what science says, this shows how you can slow scientists down by demanding utter perfection. Likewise, you *could* insist there never be another release of UNIX, Linux, MacOS, or Windows until *every* bug is fixed, and the code thoroughly reviewed by hordes of people with one programming course.
Note the distinction between normal scientific processes (with builtin skepticism), and the deliberate efforts to waste scientists’ time as much as possible if one fears the likely results. Cigarette companies were early leaders at this, but others learned to do it as well.
Lets frame belief, disbelief, and doubt in the context of the Italian flag, that was introduced previously on the hurricane thread in which evidence for a hypothesis is represented as green, evidence against is represented as red, and the white area reflecting uncommitted belief that can be associated with uncertainty in evidence or unknowns.Let's look at an example in the above-linked article:
Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations.
This statement is often used as a litmus test for belief regarding global warming, i.e. you believe this statement (consensus) or you don’t (skeptic). Very likely denotes a probability of anthropogenic influence between 90 and 99% (lets pick 95%) and I interpret most to mean between 51 and 90% (lets pick 70%), with the remainder (30%) associated with natural variability. Hence, the Italian flag analysis could represent this in the following way:As I have pointed out previously, that last sentence is immensely sloppy, conflating a hypothesis (a proposition that must be either true or false) with a weighting.
5% assigned to uncommitted belief (white),
67% assigned to anthropogenic forcing (green),
28% assigned to natural variability (red).
...
my personal weights for the Italian flag are:
white 40%,
green 30%,
red 30%.
My assignment allows the anthropogenic influence to be as large as 70% and as small as 30%
Historical surface temperature observations over the 20th century show a clear signal of increasing surface temperatures. Italian flag: Green 70%, White 30%, Red 0%. (Note: nobody is claiming that the temperatures have NOT increased.)OK, is it fair to say that "Note: nobody is claiming that the temperatures have NOT increased" means that nobody claims that "Historical surface temperature observations over the 20th century show a clear signal of increasing surface temperatures"? I mean, if nobody can claim the contrary, then the signal must be clear, right? So what does that white 30% represent? Does it represent 70% "it has warmed and I can deal with it" and 30% "it has warmed and I am in denial"? Or does it represent "although nobody claims it hasn't warmed, and there is a 0% chance that it hasn't warmed, there is still a 30% chance that it hasn't NOT warmed?"
Oliver Manuel: Thank you, Dr. Curry, for having the courage to question the way uncertainty has been characterized in climate assessment reports.and finally I will quote the entire comment of one Danley Wolfe along with Curry's response
Gordon Ford: Excellent post. When we were young we all feared “the monster under the bed”. Many have not learned to live with monster. In the real world (such as gold mining) one learns to live with the error in the estimate exceeding the estimate.
Paskvacs, eggcorning fiercely: I’m personally in favor of letting science guys work this out all by themselves. If they end up committing suicide, so be it. Say “La V”. But, as soon as you try to ‘reasonably’ let the legal system (with any new tweaks you want add) get their greedy little hands on anything like this fiasco, you –and not the scientists– are the one committing suicide.
hunter: Very interesting. I like this concept very much.
MaxL: Thank you, Dr. Curry, for introducing the discussion of uncertainty and questioning the way it has been used in climate science.
Baa Humbug: Would it be fair to say, if the true uncertainties in the climate models were enunciated clearly, Kyoto would not have happened and Copenhagen would have been a side show attended by a handfull of people?
Danley Wolfe: Judith,Um, what?
this is a great post. I think the phrase “(t)here can also be epistemic uncertainty about how a physical, chemical or biological process works is extremely important. Scientists suffer from “completeness fallacy” meaning they need to carry through work to some meaningful level of completion (for reasons such as need to mark progress, need to publish, need for peer recognition, need to meet deadlines for IPCC assessments, etc.). A model which lack sufficient treatment of all suspected independent variables – and their interaction is – under- ie., mis-specified. Result is that the model will tend to over-emphasize or under-emphasize attribution for the variables that are fully treated. I have long suspected this to be the case in climate modeling for global warming. There are many forcings and some are known to be underrepresented in the modeling such as aerosols / clouds and black soot.
curryja: Danley, very true, same goes for solar also.
Well this is entertaining. MT and others seem annoyed because they think I invented uncertainty or am taking claim for it or something? Hardly. Its the Emperor’s New Clothes thing. And the fact that MT and others don’t get it (i.e. that uncertainty and allegations of overconfidence of IPCC are important things to talk about, its the naked emperor, really) just tells me how clueless some members of the community actually are.I replied:
I give MT credit for at least discussing what i say in the blog, rather than rehashing old drive by comments that I’ve made at other blogs. But i suggest he try out his arguments over at my blog, where they would receive some real dissection from some serious experts in logic, bayesian reasoning, etc. Nobody ever burns their bridges with me in terms of meaning i wouldn’t pay attention to their argument.
I have to admit this is a surprisingly gracious response to my less-than-gracious posting. I am, in that regard at least, impressed and grateful.I guess I was in a dreadful mood, too. The world is looking particularly messed up to me these days. (Willard has taken to calling me Doctor Doom, but I assured him that I am Victor to him.)
I still can extract no sense from the Italian Flag arguments to date; it seems to me that there is no unifying method at all, just a sort of fig leaf for various commingled classes of rough intuitive guess.
Now, arguably that is all that IPCC is providing, and all we’re discussing is whose intuition is more reliable. If that is the case, though, that is how it should be discussed. Devices intended to illuminate should not obfuscate.
If you want to discuss uncertainty, and decision-making under uncertainty, by all means, let’s do that. (I’ve been trying to close that loop for decades, myself.)
As for the critique of models which so exercises Tom Fuller, let me withdraw it for the sake of more productive argument. If Dr. Curry wants to throw red meat to the inactivists on occasion, she should be held to account. But that only a secondary cause of my disappointment with her contributions to date.
Let’s focus on where the focus belongs, on how to think about uncertainty.
If Dr. Curry will continue to allow me to post on her site I will actually be grateful but I will nevertheless behave as an ingrate. If Dr. Curry is to make a genuinely positive contribution to the problem of how to deal with uncertainty in the high-stakes field of climate policy, she will need to proceed at least with considerably greater clarity than she has managed to date. It’s my impression that considerably greater care is needed as well.
I will continue to be an advocate for clarity and precision of thought. I hope others with some interest in uncertainty will stop yielding Dr. Curry a free pass on these matters, where she is an obvious novice.
If she actually wants to participate in a discussion of uncertainty, then it is important to do so carefully. One aspect of the problem is separating out one’s own biases from the various other sources of error, and another is careful thought along lines that are unfamiliar to most physical scientists. The casually appealing ideal of “separating politics from science” may turn out to be more subtle of a matter than it might at first appear.
Here's my prognosis for the broad historical outline of the next few
decades, as they will be remembered by the far future. I do believe
that global change issues will be the dominant feature of the coming
period. I am also confident that deliberate human intervention on a global
scale will eventually occur, and probably fairly soon.
==== BEGIN SCIENCE FICTIONHere's my review from Future Me:"The end of immediate prospects for massive nuclear exchanges around 1990
combined with increasing awareness of the huge impact humanity was having
on the global environment. The first international conference on the
environmnet, held in Rio de Janiero in 1992 was a turning point.The USA, representing the world's largest market and economy, felt immune
from external economic pressures, and found itself alone in maintaining
an economy-centered view at the conference. This, while politically useful
internally in a weak economy and a three-sided election, and also much
(though quietly) appreciated by certain economic interests in Europe, profoundly
weakened the global geopolitical position of the United States, driving the
developing nations into a much closer connection with Western Europe, as
global attention shifted from nuclear to environmental security.Shortly thereafter, many of the rainforest nations, and notably and
quite vigorously the Brazilians and Indonesians, made major efforts
to stop the extensive burning of the rainforests. This period also coincided
with the major volcanic eruption in the Philippines, Mt. Pinatubo, in 1991,
and also with a period in which the greenhouse warming was just beginning
to accelerate to alarming proportions. This acceleration had been largely
masked by the volcanic eruption, and had also been considerably slowed
by the smoke from the enormously extensive burning of the rain forests.The sudden lifting of these two masking phenomena around 1994, combined
with the rapid background increases in radiative forcing, led to the
Great Warming of the 90s. Agricultural failures were widespread, and
sea surface rises which had once seemed hypothetical now appeared imminent.
Extreme heat waves occurred in parts of America and China, causing much
human suffering. Demands for action were heard worldwide.Suggestions for massive tree planting were widely implemented, but the
impact of these measures was slight. Then some wags suggested reinstating
the burning of the rainforest, and the possibility of massive deliberate
dust releases entered the public awareness. Environmental purists were
outraged, feeling that anthropogenic mitigation efforts were somehow as
immoral as negative anthropogenic impacts. This position was inadvertently
bolstered by some technophiles who claimed that economic activity should
be untrammelled by environmental concerns, and that repairs to the damage
could be implemented more efficiently and cost effectively than by limiting
the activities in the first place. (Of course, time has proven both these
positions to be drastically incorrect.)In fact, the economic so-called conservatives ended up being a larger
impediment to the implementation of the Massive Dust Release Programme
than the so-called greens, the latter group being neutralized by the
support for dust releases by the majority of professional biologists and
ecologists who felt that the pace of warming represented an immediate and
profound threat to already highly stressed ecosystems worldwide. The
so-called conservatives resisted the loss of national sovereignty to
a worldwide institution that would be required to coordinate and regulate
the emissions due to economic activity, and to allocate the required
emissions to the appropriate geographic locations.Nevertheless, in 2005, with the enthusiastic participation of the North
American Bloc, the World Organization of the Ocean and Atmosphere
(WOOA) was formed, the first actually sovereign instrument of world
government, with the participation of almost all countries. By 2019, the
few minor holdouts had been pressured into participating, with Kazakhstan
and Libya being the last to join.In subsequent decades, control over climate was improved with careful
==== END SCIENCE FICTION
allocation of CO2 and dust emissions and sensitive salinity controls over
ocean currents. Massive ecosystem loss continued for some time, but the
climate control itself went well for about two centuries, until the source of
carbon was depleted, and suddenly the world faced the prospect of Global
Cooling, but that is a subject for a later chapter...
"Laughlin commits an error comparable to to seeing a baby driving around on a bulldozer and saying 'There's no need to worry; that bulldozer will be just fine.' "And at Kloor's, ThingsBreak summarizes the burgeoning pixie dust movement perfectly.
Pursuing clean energy on its own isn’t going to keep coal in the ground. What is the proposed mechanism by which the “breakthrough” scheme accomplishes this? If they don’t have one, they should just explicitly acknowledge it. If they have a mechanism, they should articulate it, so that people like me will become evangelicals for them. ...Amen, brother. What we are looking at is not a position, it's a posture. It may have legs politically. These days, God only knows what doesn't. But it doesn't actually solve any problems.
I’m ripe for conversion, Breakthrough people. Help me help you. How, absent a price on carbon or staggeringly distorive subsidies does a clean energy fund keep coal in the ground?