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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

Footsteps (a.k.a. Footfalls): A universal feature of many a ghost tale, disembodied footsteps are frequently included in reports of paranormal activity: a regular pattern of footfalls, often in another room or on a staircase, that sometimes causes witnesses to imagine intruders are in their homes. Footsteps and other anomalous sounds such as Knocks and Taps rally skeptics who call into question the physics of such phenomena and blame matrixing as the common culprit. Defenders of footsteps as a well and true paranormal phenomenon conjecture that it is an imprint of a residual haunting, or even that it is an indication of parallel dimensions.

click for team bios

Methods & Principles

In this resource you'll find an overview of PPI's principles of investigating that can be used as a model or adapted for your own investigative group. It includes i) a current inventory of our equipment and tools, ii) a detailed accounting of our procedures during an investigation, iii) a comprehensive delineation of the protocols we follow, and iv) a declaration of our code of ethics.

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