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Welcome to\xa0Light On Light Through, Episode 368, which I devote to consideration of tetrads for history and alternate history.\xa0 \xa0Don't know what tetrads are?\xa0 They're explained in the first few minutes of the podcast.

Read about Tetrads for History and Alternate History here.

Further reading on Tetrads:\xa0Laws of the Media\xa0(by Marshall McLuhan, with Preface by Paul Levinson);\xa0Tetrad Wheels of Cultural Evolution\xa0(Paul Levinson);\xa0Tetrad on the Selfie\xa0(Paul Levinson);\xa0Tetrads and Chiasmus: A Reclamation of the Tetrad Wheel\xa0(Matthew S. Lindia & Paul Levinson),

Further reading, listening to, viewing Alternate History:\xa0A Fiction Writer's Guide to Alternate History\xa0by Jack Dann;\xa0Paul Levinson's review\xa0of\xa0A Fiction Writer's Guide to the Alternate History;\xa0Paul Levinson's interview with Jack Dann;\xa0Paul Levinson's interview with Rufus Sewell, who starred in\xa0The Man in the High Castle\xa0series on Amazon Prime Video;\xa0Chuck Todd's interview with Paul Levinson\xa0about alternate histories;\xa0It's Real Life (alternate history about The Beatles by Paul Levinson, made into a radio play)\xa0

Also -- a voicemail from Marshall McLuhan for me, in 1978

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