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Endless Thread

Endless Thread

By: WBUR
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Untold histories, unsolved mysteries, and other jaw-dropping stories online and IRL. Hosted by Ben Brock Johnson & Amory Sivertson.Copyright Trustees of Boston University
Episodes
  • The Haruhi problem
    Sep 25 2026

    Get out your graphing calculators, because today's episode of Endless Thread is about a math problem. Specifically: wt(π1, . . . , πm) = m−1 ∑ i=1 wt(πi , πi+1) Now, pencils down. Stumped? So were mathematicians for decades. That is, until the equation was solved in a thread on 4Chan about watching the anime The Melancholy of Haruhi Suzumiya. Show notes:
    • A lower bound on the length of the shortest superpattern (oeis.org)
    • Sa-Shi-Su-Se-So: The Secret of Japanese Cooking Basics (Umami Insider)
    This content was originally created for audio. An auto-generated transcript is available on Apple Podcasts and Spotify. Heads up that some elements (i.e. music, sound effects, tone) are harder to translate to text.
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    16 mins
  • Keeping the Lights on at a Video Game Cafe in Southern Yemen
    Sep 18 2026

    Mo lives in Aden, an ancient city in southern Yemen. Built on a volcanic crater, it has castles and beaches set against mountains. It's beautiful. Like the rest of the country, it is also in the midst of an ongoing civil war. This summer, protests broke out over living conditions and basic services in the city -- like electricity, which can be shut off for 18 hours at a time.

    But despite these conditions, for the last five years, Mo has been fighting for a persistent dream of his –– a video game internet cafe for his neighborhood. This week on Endless Thread Ben and Amory tell the story of how Mo, against all odds, has kept the lights on (quite literally) at his gaming cafe thanks to his persistence, and the help of internet strangers across the world.

    This content was originally created for audio. An auto-generated transcript is available on Apple Podcasts and Spotify. Heads up that some elements (i.e. music, sound effects, tone) are harder to translate to text.

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    33 mins
  • Ear rumblers assemble!
    Sep 11 2026

    Ben can make a roaring, rumbling sound with his ears that no one else can hear. He never thought much about it — whether only he could do this, or whether everyone could do this — until he discovered a subreddit called Ear Rumblers Assemble: a whole community devoted to the mysterious and understudied ability to voluntarily tense one of the miniscule muscles in our ears.

    We go into Ben's ear with Dr. Anand Devaiah, and raise questions about how everyone experiences the world differently and the enduring mysteries of the human body.

    Show notes:

    • r/earrumblersassemble (Reddit)
    • Thanks to Reddit, a New Diagnosis Is Bubbling Up Across the Nation (KFF Health News)
    This episode was produced by Grace Tatter and edited by Dave Shaw. It was co-hosted by Ben Brock Johnson and Amory Sivertson. Mix and sound design by Paul Vaitkus.

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    29 mins
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