Cookies help us deliver our services. By using our services, you agree to our use of cookies.


A few tips to help you make better use of the site.

How We Organize the Info

The heart of the site is Presentations. Presentations happen at Events. An event might be a conference, a debate, or an interview. When the presentation becomes available in a format you can watch or hear, that is a Publication.

The site provides tools aimed at helping you answer certain kinds of questions:

  • Where can I watch, hear, or read a specific presentation?
  • Where did a specific presentation come from? How does it fit into timeline?
  • What presentations have been given on a particular topic?
  • What presentations are coming up?
  • What events have I attended?
  • What presentations have I already heard?
  • Who has attended the same events I have attended?


Currently, search works with a single word or phrase, not a collection of keywords.

Search recognizes certain words as "special"

  • A four-digit number will be treated as a year and match events and presentations from that year
  • A country name will find events and presentations in that country (e.g. Norway)
  • A two-character state abbreviation will find events and presentations in that state (e.g. GA)
  • A city name will find events and presentations in that city
  • presentations can also be found by a word from the presentation name or the speaker first or last name

Clicking on a tag or entering a search term that is a tag (e.g. economics ) will start a tag-based search.

Event Types

Events are categorized as Conferences, Debates, Interviews, Series, Speeches, and Tours. Events may have a physical location or be broadcast via the internet We call these internet events virtual events.

Series events take place over an extended period, but without the structure of a conference. A series with virtual presentations (such as the Philosophy for Living On Earth webinars) has no location. A series may have multiple locations (such as the ARI Road to a Free Society series). In this case, each presentation has a separate date and city.


Presentations have publications that indicate where you can find the talk. These are represented by icons:

  • CD
  • Campus
  • DVD/Blu-ray
  • FaceBook
  • Instagram
  • LP Record
  • Mokuji
  • Online
  • Podcast
  • Print
  • Tape
  • VHS
  • Vimeo
  • YouTube
  • e-Store

Sometimes a talk will have multiple copies of the same icon. This usually happens when the talk is split into multiple parts. Hovering on the icon will reval the specific part.