My husband and I had a conversation about science on the way home from church yesterday. Since he is a scientist, it drives him a little buggy when people talk about “consensus” as a way to come to a scientific conclusion, or that scientific facts can be “bent” to uphold a particular opinion or viewpoint. As he said, science is about discovery and fact, not about agreement. One hundred people can agree that grass is, in fact, a mammal, but that is not science, nor is there scientific evidence to uphold that claim.
Jay Richards gives us a litmus test for scientific evidence. When should we be skeptical of science?
First, be skeptical when different claims get “bundled” together.
Usually, in scientific disputes, there is more than one claim at issue. With global warming, there’s the claim that our planet, on average, is getting warmer. There’s also the claim that human emissions are the main cause of it, that it’s going to be catastrophic, and that we have to transform civilization to deal with it. These are all different assertions with different bases of evidence. Evidence for warming, for instance, isn’t evidence for the cause of that warming. All the polar bears could drown, the glaciers melt, the sea levels rise 20 feet and Newfoundland become a popular place to tan, and that wouldn’t tell us a thing about what caused the warming. This is a matter of logic, not scientific evidence. The effect is not the same as the cause.
Don’t assume that “consensus” equals science. (more…)