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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

Environmental Data: What may seem at first like superfluous information to a paranormal investigation in fact provides a backdrop of data that allows investigators to draw connections between anomalies in their data set and conditions in the environment. The types of external environmental conditions that pose potentially significant factors are meteorological (weather), geophysical (earthquake and solar events), and tidal, while the kinds of internal environmental factors of consequence are concerns of electromagnetic fields (EMF), carbon monoxide and natural gas, radiation, barometric pressure and temperature.

click for team bios

Residual Haunts

In "Residual Haunts: Why Is This Happening Again & Again?" Tim Mountain reviews the basics of a certain classification of paranormal activity: the recurrent haint, also known as a residual haunting,

PPI Podcast #4: Critical Thinking (2009)

Part 3 of PPI's presentation: Science and Beyond - An Educated Look at Ghost Hunting, is entitled Critical Thinking and Logic. Presented by PPI President and Co-Director Karl Sherlock.

Recorded March 21, 2009 at Grossmont College, El Cajon, California

Length: 00:17:04