A good rule of thumb for diagnosing an activity as pseudoscientific is the existence of ad hoc explanations: “my telepathic powers aren’t working tod… - Mordechai Ben-Ari

Enormous resources are invested in pseudoscience that could be better invested in improving the health and education of the public.

Scientists refuse to study astrology, not because of prejudice or because there is a conspiracy afoot, but simply because there is not a shred of evidence that would justify the expenditure of valuable time from a career.

Popper’s attempt to construct a methodology from falsification may have been flawed, but the concept is central in the demarcation of science from nonscience. No matter how strong one’s convictions, a true scientist will always allow for the possibility that her results may be falsified; if she denies this possibility or refuses to abandon or modify a theory in the face of repeated falsifications, you can be sure that you are dealing with pseudoscience, not science.