Pseudoscience is embraced, it might be argued, in exact proportion as real science is misunderstood.

Pseudoscience is easier to contrive than science, because distracting confrontations with reality — where we cannot control the outcome of the comparison — are more readily avoided. The standards of argument, what passes for evidence, are much more relaxed. In part for these same reasons, it is much easier to present pseudoscience to the general public than science. But this isn’t enough to explain its popularity.

Pseudoscience is just the opposite. Hypotheses are often framed precisely so they are invulnerable to any experiment that offers a prospect of disproof, so even in principle they cannot be invalidated. Practitioners are defensive and wary. Skeptical scrutiny is opposed. When the pseudoscientific hypothesis fails to catch fire with scientists, conspiracies to suppress it are deduced.

Pseudoscience speaks to powerful emotional needs that science often leaves unfulfilled. It caters to fantasies about personal powers we lack and long for (like those attributed to comic book superheroes today, and earlier, to the gods). In some of its manifestations, it offers satisfaction of spiritual hungers, cures for disease, promises that death is not the end. It reassures us of our cosmic centrality and importance.

Science arouses a soaring sense of wonder. But so does pseudoscience. Sparse and poor popularizations of science abandon ecological niches that pseudoscience promptly fills. If it were widely understood that claims to knowledge require adequate evidence before they can be accepted, there would be no room for pseudoscience. But a kind of Gresham’s Law prevails in popular culture by which bad science drives out good.

Pseudoscience speaks to powerful emotional needs that science often leaves unfulfilled. It caters to fantasies about personal powers we lack and long for.

Much in the study of the paranormal was what we would now call pseudo-science. But the line between science and pseudo-science is smudged and shifting; where it lies seems clear only in retrospect. There is no pristine science untouched by the vagaries of faith.

Every science comes with its own pseudo-science, a bizarre distortion that comes from a certain kind of mind: astronomy has its caricaturist in astrology, chemistry used to have alchemy.

Today, we are seeing hundreds of years of scientific discovery being challenged by people who simply disregard facts that don’t happen to agree with their agendas. Some call it "pseudo-science," others call it "faith-based science," but when you notice where this negligence tends to take place, you might as well call it "political science."

A good rule of thumb for diagnosing an activity as pseudoscientific is the existence of ad hoc explanations: “my telepathic powers aren’t working today because of a force field emanating from the hostile talk-show host.” There are no “bad-gravity days” and there are no days when your TV set stops working because electromagnetic waves feel hostility.

Science thrives on errors, cutting them away one by one. False conclusions are drawn all the time, but they are drawn tentatively. Hypotheses are framed so they are capable of being disproved. A succession of alternative hypotheses is confronted by experiment and observation. Science gropes and staggers toward improved understanding. Proprietary feelings are of course offended when a scientific hypothesis is disproved, but such disproofs are recognized as central to the scientific enterprise. Pseudoscience is just the opposite. Hypotheses are often framed precisely so they are invulnerable to any experiment that offers a prospect of disproof, so even in principle they cannot be invalidated. Practitioners are defensive and wary. Skeptical scrutiny is opposed. When the pseudoscientific hypothesis fails to catch fire with scientists, conspiracies to suppress it are deduced.

deluded or not, supporters of superstition and pseudoscience are human beings with real feelings, who, like the skeptics, are trying to figure out how the world works and what our role in it might be. Their motives are in many cases consonant with science. If their culture has not given them all the tools they need to pursue this great quest, let us temper our criticism with kindness. None of us comes fully equipped.

Pseudoscience speaks to powerful emotional needs that science often leaves unfulfilled.

Every science comes with its own pseudo-science, a bizarre distortion that comes from a certain kind of mind.