Pseudoscience is that body of thought and practice that looks superficially scientific while at the core, it is nothing but irrational. Pseudoscience is characterized by being contradictory, exaggerated or unprovable, lacking openness to evaluation by other experts and absence of systematic practices. An example of pseudoscience is the assertion made in the nineteenth century that light can’t glow inside a glass bulb because of the absence of oxygen in the vacuum inside. Such conclusion is based on logical approaches but some rationality out of the box that transcended the thinking of the wisest people then, was missing, which was to send electric current through wires and converting that electrical energy into light.
Pseudoscience is worse than ignorance, for it drives scientific interest in the wrong direction. It is better to remain ignorant than to know things that are false. Interestingly, pseudoscience is manifested in some claims of the adherents of the religions. Some religious apologists establish the notion that the intelligent design is true and they do so entirely by logical means. Their claim is based on the laws of probability and thus are very compelling but they have a tendency to necessarily plug their beliefs and thus terminate the whole essence of science. When someone objects their method, they provide a rebuttal based on rational science which no thinking man can disagree with. Such practice deludes the common people who have no expertise to distinguish scientific rationality from jargon. As can be seen, many people defend their idiotic religious ideals entirely by scientific means. It is necessary that we spread awareness among the people about how science is done and what makes it fundamentally different from pseudoscience. To put into perspective, Astrology, Homeopathy are some common pseudosciences of our time.