I started hiding the UFO books in brown paper covers. I should disclose that I am not a scientist. In fact, I can barely brew beer without blowing out a wall in my house. But Science or Pseudoscience is neither a scientific treatise nor an argument establishing the veracity of paranormal phenomena. Instead, it is a sociological examination of studies derided as pseudoscience and a philosophical defense of their worth.
Science depends on reproducibility.
Anomalistics is the study of things that do not repeat. If ghosts always appeared, the question of their existence would be answered. The ufologist can't know what to look for or how to look for it. Bauer notes that scientific progress usually occurs incrementally with small advances in method, data, or theory. For progress in anomalistics, your average Fox Mulder gambles on advances in all three areas - new data, new methods to gather it, and new theories to explain it.