Okay class, we have a movie today. Somebody get the lights please.
This 20-minute 1953 film from renowned married designers Ray and Charles Eames falls into one of my favorite genres: contemplation of a familiar subject as seen from a removed vantage point. In this case, the subject is communication, with a focus on binary information.
The film may not teach you much you didn’t know already, but it’s a showcase of ways to build an explanation with engaging imagery. It’s also a prime example of an excellent explanation trick — illuminating multiple subjects by casting them as different versions of the same thing. The film shows how painting, speech, telegrams, printed images, text, computer programs, etc. all have the same core components: information source, message, transmitter, signal, receiver, and destination. Focusing on the fundamental similarities cuts through potentially confusing details to give you a solid model for understanding each one.
On top of that, it’s loaded with the warm, warbly woodwind music of classroom films (in this case, composed by the late great movie score composer Elmer Bernstein). If you were a kid in the 50s through 80s, you probably know this as the music of education. Or desk naps.