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Strong Climate Change Opinions Are Self-Reinforcing
An anonymous reader writes "A study recently published in Nature (abstract) looked at how personal beliefs altered a person's perception of climate change. Surveying a sample of people in 2008 and then the same people again in 2011, the study looked for 'motivated reasoning,' where 'high belief certainty influenced perceptions of personal experience,' and 'experiential learning,' where 'perceived personal experience of global warming led to increased belief certainty.' According to the article, 'When you categorize individuals by engagement — essentially how confident and knowledgeable they feel about the facts of the issue — differences are revealed. For the highly-engaged groups (on both sides), opinions about whether climate is warming appeared to drive reports of personal experience. That is, motivated reasoning was prevalent. On the other hand, experience really did change opinions for the less-engaged group, and motivated reasoning took a back seat.None of that is truly surprising, but it leads to a couple interesting points. First, the concrete here-and-now communication strategy is probably a good one for those whose opinions aren't firmly set — fully 75 percent of Americans, according to the polling. But second, that tack is unlikely to get anywhere with the 8 percent or so of highly-engaged Americans who reject the idea of a warming planet, and are highly motivated to disregard anything that says otherwise.'"
"I believe GW is happening and that it causes bad things. Today bad weather happened, must be due to GW."
or
"I do not believe GW is happening or that it causes bad things. Today bad weather happened, as it does from time to time."
"I did not believe GW was happening, but did believe it would cause worse hurricane. Today a bad hurricane happened, so now I have more faith in GW."
or
"I did not believe GW was happening, but did believe it would cause hotter summers.. We had snowfall in June so, therefore, no GW.
The far more interesting thing than the conclusion reached by the source is that none of these is a remotely scientific line of reasoning. Correlating personal experience (i.e., weather events) with climate is long acknowledged as foolish, just like jumping to the conclusion that you live in the most unsafe city in the world because you got mugged -- or that you live in the safest one because you've never been mugged.
Cognitive bias is nothing new; it is not specific to climate change.
"A cognitive bias is a pattern of deviation in judgment that occurs in particular situations, which may sometimes lead to perceptual distortion, inaccurate judgment, illogical interpretation, or what is broadly called irrationality." http://en.wikipedia.org/wiki/Cognitive_bias
Sent from my ENIAC
Scientists rarely say anything one way or the other. They publish papers and then the politicos, pundits and whatever you call us here on Slashdot and other sites start arguing and calling each other names over what they published.
When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
....when it's extremely cold in the winter, scientists say thats just normal weather, but when it's extremely hot in the summer, it's global warming?
Maybe you could make us a list of scientists who are saying that.
We know about global warming, not from observing warm days, but from longitudinal measurements from all over the world.
And of course, we understand the mechanism. The "greenhouse" property of certain gasses that we have been spewing into the atmosphere in ever-increasing amounts since the beginning of the industrial age has been known IIRC for about 200 years.
Also, global warming doesn't imply warm winters in any particular location. It means more thermal energy in our atmosphere and oceans, which can destabilize that very complex dynamical system that we call "weather".
For an example of a mechanism whereby global warming can make winter colder in specific locations, see "The Winters of Our Discontent" in the December 2012 Scientific American.
But then, I'm guessing that you're not particularly interested in learning how scientists figure out what's going on, or you wouldn't be posting such nonsense. A "first post!" would have made you look less foolish.
Sheesh, evil *and* a jerk. -- Jade
And of course, we understand the mechanism.
Are you sure? The last glacial maximum was between 19-25000 years ago (http://en.wikipedia.org/wiki/Last_Glacial_Maximum) during which time vast portions of North America and Europe were covered in ice sheets.
19,000 years is a pretty short period of time in the grand scheme of things. To think the location I'm currently living was underneath a kilometer of ice less than 20,000 years ago, and no there are no glaciers anywhere close, the logical conclusion is the earth has been warming up for a lot longer than just the time since the industrial age. In fact, from what I understand about earth's history, we've been a majorly tropical planet for most of the time and ice cover is somewhat rare.
There's no doubt we have some effect on the changing climate (in regards to temperature via the greenhouse effect), but to say that is the mechanism causing the earth to warm seems like a huge jump from basic logic.
I am pro-GW (I am in favor of it)
I'm guessing that that doesn't mean what it sounds like!
Joking aside, I appreciate your forthright post. And I despise the fact that people mod down posts that state views that they don't agree with. (Much better, IMO, to mod them *up*, so that the post and the refutations (or attempts) will be read by more people.)
But IMO, here's the crux:
Let me summarize the debate. One side believes there is sufficient evidence for theory X. The other side believes there is insufficient evidence. The side that believes there is sufficient evidence believes that the evidence is so overwhelming that to be skeptical of it is of the same order as being skeptical of gravity.
I am not a climatologist, but I do know a bit about how science works. And I know that the overwhelming majority of *scientists* believes that there is sufficient evidence for the fact (not theory) of global warming. So for me there *aren't* two sides.
Now scientists aren't divinely inspired, and are in fact sometimes wrong, but in the big picture science bases its views on evidence, and even goes out of its way to look for refuting evidence. So for me this is like asking whether I should invest in someone's flying car business when the overwhelming majority of aeronautical engineers say that the design won't actually fly, contradicted by a smaller number of non-experts who publish their views as editorials in the Wall Street Journal rather than engineering journals. There simply isn't the slightest reason to examine "two sides". Especially when the contradictors resort to arguments that the entire field of aeronautical engineering are lying because they want the venture to fail. It's just nonsense.
I personally believe rational argument is virtually impossible on the topic of global warming. Devout AGW believers will not be swayed by any argument. To them AGW is self-evident and the burden of proof should be on the other side to prove that it is not happening.
No, AGW is based on evidence. As I said, I'm not a climatologist, but I can read.
The fact that the vast majority believes AGW is undeniably real and even some kind of immediate threat to our species makes it even more unlikely that any real evidence will ever be gathered.
FWIW, I do believe that AGW is undeniably real, but that the only "threat" is poses to our species is inconvenience, and probably a lot of deaths in wars by nations trying to optimize their own convenience at the expense of others, but hardly an extinction-level event. (*Maybe* a runaway instability will render our planet uninhabitable, but I'm not aware of any evidence that that is our fate.)
The fact that the vast majority believes AGW is undeniably real and even some kind of immediate threat to our species makes it even more unlikely that any real evidence will ever be gathered. Why bother to gather evidence about something that the majority of the world has already decided is undeniably true?
As a matter of fact, scientists *are* busy gathering additional evidence. The fact that both old and new evidence overwhelmingly support one conclusion is hardly a reason to deny that conclusion.
These days scientists (and I use that term loosely) focus on refining and reinforcing the argument in favor of AGW. Not so much on proving that it exists.
Scientists are also busy studying gravity and the expanding universe, but as with global warming, they're far past the point of needing to determine whether those phenomena exist.
Sheesh, evil *and* a jerk. -- Jade
Link to the "actual data", please?
Sorry, but we don't have the technology for HTML links to alternative realities.
Sheesh, evil *and* a jerk. -- Jade