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While the scientific evidence for climate change is overwhelming, it has become an ideological matter. In the case of conservatives, climate change denial has become something of a stock position. In the case of liberals, belief in human-caused climate change is a standard position. Because of the way ideological commitments influence thought, those who are committed to climate change denial tend to become immune to evidence or reasons offered against their view. In fact, they tend to double-down in the face of evidence—which is a standard defense people use to protect their ideological identity. This is not to say that all conservatives deny climate change; many accept it is occurring. However, conservatives who accept the reality of climate change tend to deny that it is caused by humans.
This spectrum of beliefs does tend to match the shifting position on climate change held by influential conservatives such as Charles Koch. The initial position was a denial of climate change. This shifted to the acceptance of climate change, but a rejection of the claim that it is caused by humans. The next shift was to accept that climate change is caused by humans, but that it is either not as significant as the scientists claim or that it is not possible to solve the problem. One obvious concern about this slow shift is that it facilitates the delay of action in response to the perils of climate change. If the delay continues long enough, there really will be nothing that can be done about climate change.
Since many conservatives are moving towards accepting human caused climate change, one interesting problem is how to convince them to accept the science and to support effective actions to offset the change. As I teach the students in my Critical Inquiry class, using logic and evidence to try to persuade people tends to be a poor option. Fallacies and rhetoric are vastly more effective in convincing people. As such, the best practical approach to winning over conservatives is not by focusing on the science and trying to advance rational arguments. Instead, the focus should be on finding the right rhetorical tools to win people over.
This does raise a moral concern about whether it is acceptable to use such tactics to get people to believe in climate change and to persuade them to act. One way to justify this approach is on utilitarian grounds: preventing the harms of climate change morally outweighs the moral concerns about using rhetoric rather than reason to convince people. Another way to justify this approach is to note that the goals are not to get people to accept an untruth and to do something morally questionable Quite the contrast, the goal is to get people to accept scientifically established facts and to act in defense of the wellbeing of humans in particular and the ecosystem in general. As such, using rhetoric when reason fails seems warranted in this case. The question is then what sort of rhetoric would work best.
Interestingly, many conservative talking points can be deployed to support acting against climate change. For example, many American conservatives favor energy independence and keeping jobs in America. Developing sustainable energy within the United States, such as wind and solar power, would help with both. After all, while oil can be shipped from Saudi Arabia, shipping solar power is not a viable option (at least not until massive and efficient batteries become economically viable). The trick is, of course, to use rhetorical camouflage to hid that the purpose is to address climate change and environmental issues. As another example, many American conservatives tend to be pro-life—this can be used as a rhetorical angle to argue against pollution that harms fetuses. Of course, this is not likely to be a very effective approach if the main reasons someone is anti-abortion are not based in concern about human life and well-being. As a final example, clean water is valuable resource for business because industry needs clean water and, of course, human do as well. Thus, environmental protection of water can be sold with the rhetorical cover of being pro-business rather than pro-environment.
Thanks to a German study, there is evidence that one effective way to persuade conservatives to be concerned about climate change is to appeal to the fact that conservatives value preserving the past. This study showed that conservatives were influenced significantly more by appeals to restoring the earth to the way it was than by appeals to preventing future environmental harms. That is, conservatives were more swayed by appeals to conservation than by appeals to worries about future harms. As such, those wishing to gain conservative support for combating climate change should focus not on preventing the harms that will arise, but on making the earth great again. Many conservatives enjoy hunting, fishing and the outdoors and no doubt the older ones remember (or think they remember) how things were better when they were young. As examples, I’ve heard people talk about how much better the hunting used to be and how the fish were so much bigger, back in the good old days. This provides an excellent narrative for getting conservatives on board with addressing climate change and environmental issues. After all, presenting environmental protection as part of being a hunter and getting back to the memorable hunts of old is far more appealing than an appeal to hippie style tree-hugging.