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WE'RE BACK!

October 2025 lilbrary presentations return for another season of lively multi-media presentatioins on "ghost hunting" with from a skeptical viewpoint, including high-tech pseudoscience, skeptical inquiry, critical and thinking pitfalls like cognitive biases. Free admission and open to the pubic. Note: Portions of this presentation may not be suitable for very young audiences.

When and where?

Oct. 21, 6-8pm

Kensington Branch Library

4121 Adams Ave, San Diego, CA 92116

Oct. 28, 5:30-7:30pm

Paradise Hills Branch Library

5922 Rancho Hills Dr, San Diego, CA 92139

honoring the heroes of

skeptical inquiry

Evidence: Loosely and inaccurately used to to refer to the unexamined readings, audio, and video obtained from an investigative activity, the term "evidence" has come under criticism for encouraging expectation bias, an a prior assumption that source data is inherently evidentiary, and that, consequently, anything parsed from it is "proof positive." Conscientious paranormal investigators prefer to use general, less biased language such as "data" or "media." When something not yet explainable is identified in the data or media, it should instead be referred to as an "event of interest," or a "finding."

click for team bios

EVP: Infrasound, Ultrasound or Something Else?

Over the years there has been a lot of debate regarding the nature of Electronic Voice Phenomena or EVP. One prevailing idea is that EVP is composed of either ultrasonic or infrasonic sound waves, and that is the reason why investigators are unable to hear EVP at the time of capture. Although this is an elegant idea, it is unlikely because it defies the basic understandings of acoustic energy.

PPI Presents...

Join real-life paranormal investigators from TAPS Family group, Pacific Paranormal Investigations, for a spooky Halloween multi-media presentation with a skeptical view of the science and the pseudoscience of modern paranormal investigating. Enjoy media clips from PPI’s private cases that will leave you laughing, dumbfounded, creeped out, or all of the above. Find out about modern “ghost” hunting technology, the methodology of skeptical inquiry, and the critical thinking tools needed to evaluate ghost “evidence” while at the same time avoiding the pitfalls of pseudo-science and cognitive bias. Learn how to get started as a paranormal investigator with recommended reading and an invitation to join local ghost and paranormal meetup group, SDGAP. It’s fun, always free, and open to the public.