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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

Faraday Cage: "Faraday" refers to physicist Michael Faraday, who in 1836 invented the Faraday cage. Also known as a "Faraday shield," Faraday cages do not have to take the form of an actual cage, but rather can be any sort of enclosure surrounded or lined by a mesh of conducting material that blocks electrical fields and radio frequencies. Its use in paranormal investigating is largely experimental and theoretical: working from the major premise that electromagnetism is a common principle of our physical universe and the unknown physical universe of the spirit realm, it provides an opportunity to rule out localized EMF pollution as the source of paranormal activity: if activity occurs within the Faraday enclosure, and it cannot be rationally explained by any other devices within, then its origins are potentially paranormal.

click for team bios

Surveillance Logs

For many reasons, establishing and following a clear set of surveillance protocols during investigations is crucial. For starters, anyone claiming to honor the scientific method in paranormal investigating understands the importance of controls. By “controls,” we mean those precautions taken to contain how data is collected, to limit contamination of that data, and to identify potential misinterpretations and false positives....

PPI Podcast #3: Tools of the Trade (2009)

Part 2 of PPI's presentation: Science and Beyond- An Educated Look at Ghost Hunting, is entitled Tools of the Trade. Presented by PPI Tech Manager and Co-Director Brian Miller.

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

Length: 00:14:23