Category Archives: Mathematics

Skepticism

Just what is it, anyway?

I consider myself a skeptic, in general. I don’t really “believe” in anything, including deities, except the scientific method. Of course, that means that I also don’t actively disbelieve in deities. I simply have no opinion about them.

When it comes to science, I accept as a working theory that which best seems to scientifically explain the available data, which is why I think that evolution is the best explanation for the fossil record and the structure and relationship of DNA in life on earth. But I don’t “believe” in it. I don’t even “believe” in gravity. I simply view it as a useful invention of Isaac Newton, improved upon by Einstein, to explain a lot of empirical phenomena, like things falling when dropped, or bodies in space orbiting other bodies. And what makes it useful is that it is very predictive.

Which brings us to climate “science,” which seems to be anything but. Which isn’t surprising, because the models remain primitive, both in terms of the computer power needed to properly model such a thing, and our understanding of the interactions. So when asked if I “believe” that the earth is warming, or if that warming is being caused by humans, I don’t really know what to say, since I don’t “believe” anything. I certainly can’t “deny” it, since I have no idea, but (as I’ve often said), if the planet is warming, it would hardly be surprising, considering that we’re less than half a millennium from the Little Ice Age.

To repeat: Here is what I do deny:

I deny that science is a compendium of knowledge to be ladled out to school children like government-approved pablum (and particularly malnutritious pablum), rather than a systematic method of attaining such knowledge.

I deny that skepticism about anthropogenic climate change is epistemologically equivalent to skepticism about evolution, and I resent the implications that if one is skeptical about the former, one must be similarly skeptical about the latter, and “anti-science.”

As someone who has done complex modeling and computer coding myself, I deny that we understand the complex and chaotic interactions of the atmosphere, oceans and solar and other inputs sufficiently to model them with any confidence into the future, and I deny that it is unreasonable and unscientific to think that those who believe they do have such understanding suffer from hubris. To paraphrase Carl Sagan, extraordinary policy prescriptions require extraordinary evidence.

Nothing has changed in the interim to cause me to change my opinions in that regard.

Google Chrome

Go home. You’re drunk.

Messed Up Chrome

This is not atypical. After a while, every page starts to refuse to load, or becomes unreadable, and you can paint weird things on it by just waving the cursor over various areas. It’s version 35.0.1916.114 stable, running in Fedora 20.

In frustration, I uninstalled and tried running the current beta. It had its own problems, with continual tab crashes and freezing the machine.

I switched a while ago from Firefox, for various reasons. Opera starts chewing up half my CPU after being up a for an hour or so. It just seems like every browser sucks.

The Climate Debate

Over at First Things, John Murdock has some thoughts (including a discussion of me, Mark and the Mann suit), but there is also a howler:

Big decisions, whether in the life of a person or a nation often boil down to trust. America has been hemming and hawing for a while now, trying to decide if the 97 percent or so of climate scientists who say we have a big manmade problem are looking out for our best interest or are self-serving quacks.

Sorry, but this number has been debunked multiple times. It is simply false that 97% of scientists say that we have a “big manmade problem.” You can only get to such a ridiculous number by watering down what the “consensus” is about. Most scientists (including me) believe that carbon dioxide is a greenhouse gas. Period. Once you get beyond that, to whether or not we are causing a significant change in the climate with emissions, let alone whether or not the results will be catastrophic, and need to be addressed with immediate public policy, the “consensus” falls completely apart. Anyone who believes in that nonsensus needs to go read this.

Climate, And Time Scales

How long is long?

The science of climate change on decadal to century timescales most definitely is not settled, in spite of the IPCC’s highly confident proclamations. There are so many interesting and unsolved issues in climate dynamics. At this point, climate science seems relatively irrelevant for energy policies – the goals of carbon mitigation are in place, and whether anything meaningful can be achieved in the near term is doubtful. However, climate scientists are (in the words of Pointman) in a hurry towards some finishing line only they could see, and acted accordingly. I suspect that the IPCC becoming less and less relevant to the UNFCCC agenda.

I’m hoping that at some point soon, climate scientists will get fed up with trying to play politics with their science and get back to researching and debating these fundamentally interesting and unsolved issues in climate science, rather than attacking their colleagues for suggesting that there are other ways of thinking about climate change.

Wouldn’t that be nice?

Climate Scientists

Are they being forced to toe the line? Sure looks like it:

I have heard that a number of leading scientists are pretty disgusted with the way Bengtsson has been treated and see the larger issues of concern about the social psychology of our field. People are talking about writing blog posts for professional societies, trying to get signatures on a statement, etc. I hope that these individuals follow through, and that the ‘climate’ for climate research can improve.

This is a very welcome change from the 2009 reactions to Climategate, which reflected most silence, but solidarity with the climate scientists whose emails were made public.

With regards to Pielke Jr’s statement: “anyone who wishes to participate in the public debate on climate change should do so knowing how the politics are played today — dirty, nasty, destructive.” I agree with this statement. As someone participating in the in public debate on climate change, I certainly expect barbs from the media and advocacy groups. What concerns me greatly is other scientists behaving in a dirty, nasty and destructive way, in other words, playing dirty politics with their science.

Can climate scientists please stop the intimidation, bullying, shunning and character assassination of other scientists who they find ‘not helpful’ to their cause? Can we please return to logical refutation of arguments that you disagree with, spiced with a healthy acknowledgement of uncertainties and what we simply don’t know and can’t predict?

Probably not. Not until they suffer some truly adverse consequences for it.