Are pseudo-scientific techniques credible

Answer 1

There seems to be an underlying assumption in this question. Wikipeda defines "pseudo-scientific" as:

"Pseudoscience is a claim, belief, or practice which is presented as scientific, but does not adhere to a valid scientific method, lacks supporting evidence or plausibility, cannot be reliably tested, or otherwise lacks scientific status. Pseudoscience is often characterized by the use of vague, exaggerated or unprovable claims, an over-reliance on confirmation rather than rigorous attempts at refutation, a lack of openness to evaluation by other experts, and a general absence of systematic processes to rationally develop theories."

The real question here may relate to Parapsychology research and its status as a science. Parapsychology is the scientific study of psi phenomena and abilities including Extra Sensory Perception and Psychokinesis as well as Exceptional Experiences such as Out-of-Body and Near-Death Experiences. The methods, protocols, experimental designs and analytical techniques used in Parapsychology fully conform to scientici method. Parapsychology is therefore not a pseudoscience.

It is a mistake to presume that Parapsychology includes things such as UFO, Big Foot or other anomalous beleifs and assertions. Parapsychology also has nothing whatsoever to do with "ghost hunting".