Two Guys on Your Head

Two Guys on Your Head > All Episodes

July 29, 2022

Porosity Complicated

By: Rebecca McInroy

Last week’s episode focused on the concept of “porosity” a term developed by anthropologist Tanya Marie Luhrmann and psychology researcher Kara Weisman, to help understand the root of religious and spiritual beliefs. They argue that at the heart is the concept of a porous boundary between mind and world and that people in all human societies have conflicting intuitions about this boundary.

Here at Two Guys on Your Head, Dr. Art Markman,  Dr. Bob Duke, and Rebecca McInroy find this concept interesting and thought we would spend a little time, not only understanding it but complicating it.

In this second in our three-part series on porosity we ask a few questions about how it manifests in our daily lives and why we should care.

“Porosity is The Heart of Religion”

 


Episodes

June 5, 2026

Oration Part III: The Conversation

Any form of oration is communication, and that communication is often not just a one-way street. In our third episode in our Two Guys on Your Head series on oration, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy look at how oration can be a conversation, albeit a fraught one.

Listen

May 31, 2026

Oration Part II: Some Tips

Graduation season brings a flood of commencement speeches, but most fall flat. In this episode of our Two Guys on Your Head series on oration, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy offer some practical tips on how to be an effective orator. 

Listen

May 22, 2026

Oration Part I: On Slowing Down

Graduation season brings a flood of commencement speeches, but most fall flat. In this first episode in our  Two Guys on Your Head series on oration, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy break down the psychology behind effective public speaking and explore the specific techniques that separate forgettable speeches from memorable ones.

Listen

May 15, 2026

How We Learn Language

If we can learn a language in our infancy, why is it so difficult to learn a second language later in life? On this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy explore how we learn language.

Listen

May 8, 2026

Déjà vu

Have you ever traveled to a new place and suddenly, randomly, you experience this overwhelming sense of familiarity with what you’re seeing, like you’ve already seen it, even though you know you haven’t because you’ve never been there before? We call this phenomenon Déjà vu. On this episode of Two Guys on Your Head Dr. Art Markman, Dr. Bob […]

Listen

May 1, 2026

Graduation

It’s graduation season, and that comes with a lot of joy, tears, expectations, and relief. But it turns out, as Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy explore in this episode of Two Guys on Your Head, graduation is about a lot more than a diploma.

Listen

April 24, 2026

Art Explains his Easter Egg

Art explains the intro clip in the Easter Egg episode.

Listen

April 24, 2026

Easter Eggs

When we discover a hidden secret in a song, a movie, or a book, we can feel a sense of joy and connection. Those little gems are referred to as “easter eggs,” and we look for them because we’re curious. In this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk […]

Listen