Dr. Robert Todd Carroll is a Fellow of the Committee for Skeptical Inquiry, and author of The Skeptic's Dictionary: A Collection of Strange Beliefs, Amusing Deceptions, and Dangerous Delusions. He is Emeritus Professor of Philosophy at Sacramento City College, where he taught Logic and Critical Reasoning, Critical Thinking about the Paranormal, Law, Justice and Punishment, and World Religions. He is also author of the textbook Becoming a Critical Thinker.

Bob is the creator of the popular website Skepdic.com, which features numerous essays and book reviews, and the Skeptimedia blog where he provides a commentary of media coverage of pseudoscience and the paranormal. But the focus of the site is the original online version of the Skeptic's Dictionary, containing hundreds of entries on topics ranging from "abracadabra to zombies". This is the resource for defining skepticism.

In this episode, Karen Stollznow talks with Bob about the importance of defining the topics of which we are skeptical. They discuss the inadequacies of existing definitions of paranormal and pseudoscientific subjects, and why it is necessary to counter uncritical bias with explanations that are skeptical. However, the damning evidence (or lack-thereof) usually speaks for itself.

Bob reveals the top searches to his site, uncovering the themes that should be of particular concern to skeptics. He explains that his online book is reader-driven, and that user feedback and assistance has molded the shape of this dynamic resource. Even with 600 current entries in this encyclopedia-like dictionary, this is a work-in-progress that will never be finished.

Bob discusses skeptical activism, becoming a skeptic, and how to invent your own pseudoscience to learn critical thinking. As a life-long teacher of this topic, Bob explains that critical thinking needs to be taught, but also needs to be learned critically. We discuss how much critical thinking can or should be taught, and how much is a process of self-learning.