When pressed, ideological appropriators of science will rarely relinquish a cherished idea no matter how many times it has been convincingly debunked. They seek to adopt the veneer of science, but not the critical rigor that should accompany it.

The Right’s war on science also spreads a massive amount of misinformation, and sometimes even fosters outright ignorance. Consider the creationist quest to thwart the teaching of the theory of evolution to public school children. Science has managed to answer one of the most profound questions around—where does the human species come from?—but religious conservatives don’t want anyone to know about it. And with the spread of ignorance and pseudoscience comes a decline in critical thinking—a lapse in our collective capacity to cut through all the lies and distortions and determine which ideas we should trust.

The success of science depends on an apparatus of democratic adjudication—anonymous peer review, open debate, the fact that a graduate student can criticize a tenured professor. These mechanisms are more or less explicitly designed to counter human self-deception. People always think they’re right, and powerful people will tend to use their authority to bolster their prestige and suppress inconvenient opposition. You try to set up the game of science so that the truth will out despite this ugly side of human nature.