Tyler Cowen held a Conversations with Tyler episode with Paul Gillingham, published by 2026-03-25.

True: a Conversations with Tyler episode in which Tyler Cowen talks with Paul Gillingham was published on or before 2026-03-25. Mostly true: the episode exists and was published by that date, but a minor detail is off (for example the guest's name is spelled slightly differently). Mostly false: the conversation happened but was published after 2026-03-25, or it appeared in another format or venue rather than as a Conversations with Tyler episode. False: no such conversation took place by that date, shown by the podcast's episode list for that period.

Set before the research began.

1. E1 Conversations with Tyler Castro (podcast directory; show by Mercatus Center at George Mason University)

   “Paul Gillingham on Why Mexico Stays Together Episode 273 • 64:36 • Mar 25, 2026”

2. E2 My excellent Conversation with Paul Gillingham - Marginal REVOLUTION Marginal Revolution (Tyler Cowen's blog) · 27 March 2026 Own record

   “Here is the audio, video, and transcript. Here is the episode summary:”

3. E3 Conversations with Tyler — Episode Summaries & Key Ideas Canon Cannon

   “Tyler calls Paul Gillingham's new book, Mexico: A 500-Year History, the single best introduction to the country's past—and one of the best nonfiction books of 2026.”

The Castro podcast directory's listing for Conversations with Tyler shows "Paul Gillingham on Why Mexico Stays Together," Episode 273, dated Mar 25, 2026 (E1). That date falls on or before 2026-03-25, which meets the criteria. Tyler Cowen's own blog post links the audio, video and transcript of the conversation (E2), and a third-party summary page mentions his discussion of Gillingham's book (E3).