Here’s a problem: how to you know what is right if you don’t explore the question for yourself?
While we should strive to only accept those things which we can verify for ourselves, that is simply impossible to do in all things. We can’t all do our own cancer treatment studies, for example. Doing just one such study takes huge amounts of time, money, effort, and knowledge in getting results and interpreting them. And that would be just one study. What about food safety, or discoveries in modern physics? It’s implausible that you will be trying to double-check that you can create your own superconductor at higher temperatures.
So either you have to be ignorant about so much that is important in the modern world, or you need to accept the work done by others. But how reliable can that be? We know individuals lie or are mistaken all the time, and being an expert or well-experienced in a field doesn’t stop that from happening. It’s easy to point to examples in recent times, such as scientists paid to argue against the connection between smoking and lung cancer as well as other examples detailed in Merchants of Doubt. However, one of the authors of that book, Naomi Oreskes, argues that we should still trust the scientific enterprise as she details well in this TED talk.
In particular, Oreskes says we should put our trust not in individuals experts but scientific consensus, a wisdom of the crowd of experts in a subject. And the reason that the scientific consensus should be given weight rather than, say, the consensus of astrologers on their subject, is because of the nature and values of science, especially its organized skepticism. So, if there is a group of people with expertise in a subject, and if that community of experts evaluates a claim and it goes through debate and is analyzed with good data and skeptical inquiry, and that group comes to a consensus, those of us outside of that group have good reason to trust the results of that group; at the very least, it is much more likely that they are right than wrong, and you are unable to determine otherwise.
Or are you?
The question now arises as to when might you have reason to doubt the consensus? Perhaps now those outside of the group doing the research can evaluate the claims because so much of the data and analysis papers are online we can go figure it out for ourselves. The problem is, that is much harder than one thinks. That point is made well in Harry Collins’s book Are We all Scientific Experts Now? With the particular example of so-called Climategate, we see what happens when emails by the researchers are cherry-picked and misunderstood to mean something dastardly. Additionally, Collins shows the healthcare disaster in South Africa when the president of that country did his research online and then denied the use of anti-retroviral drugs to alleviate the spread of HIV to newborn children. Doubting the consensus to go with the minority report or fringe view tends to lead to misunderstanding and even suffering.
But why do people outside of the expert researchers fail to examine the evidence properly? And are we doomed to just trust the consensus no matter what? What can a regular person do to make sure that they have justified reason to trust any or all given consensuses? About two months ago, Richard Carrier posted a blog entry on that subject on how to evaluate an argument from consensus, and since then he has discussed the question in a few different places, in particular this video chat on Inspiring Doubt.
Carrier does make good points about when a consensus may not be a reliable consensus (if the experts haven’t evaluated the methods critically or having considered the opposing arguments, which is why astrologers cannot be trusted when they state astrology works), but one thing in particular comes up in that blog post and his interview: our use of critical thinking skills to evaluate the arguments of the experts, especially if against a fringe view. And while it is true that if you can see someone continuously using fallacious arguments you have reason to doubt the strength of that person’s position, there is trouble with using critical thinking. This is in part to something echoed by Chris Hallquist, Julia Galef, and Luke Muehlhauser, and in part it is related to the talk I will be giving at the upcoming SSA East conference next weekend.
So, what is wrong with critical thinking? Continue reading