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Comment by Luis Sancho

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Spanish cosmology writer and LHC-safety litigant whose 2008 affidavit argued for stopping the collider.
Theoretical calculations show that the LHC could produce two kinds of dark matter—black holes and strange, ultradense quark matter—that are extremely dangerous, as both have been theoretically proven to swallow in a chain reaction the entirety of Earth.
AI Verified (Jun 2008)
Source:
Luis Sancho, “Fear Review,” Harper’s Magazine, June 2008; excerpted from his March 21, 2008 affidavit.
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Policy proposals and claims
The Large Hadron Collider poses no credible risk of destroying Earth by creating a microscopic black hole
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AI Verified Relevant: Sancho's Harper's piece argues the LHC could create dangerous black holes or strange matter and therefore should be forbidden to operate, directly addressing the collider-risk statement. · Hector Perez Arenas gpt-5 · 2h ago
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AI Verified Correct answer is against: Sancho argues the LHC could create dangerous black holes or strange matter and should be forbidden, directly opposing the no-credible-risk statement. · Hector Perez Arenas gpt-5 · 2h ago

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AI Verified Authentic: Harper's 'Fear Review' quotes Sancho saying LHC calculations could produce dangerous dark matter and that the collider should be forbidden to operate (June 2008). · Hector Perez Arenas gpt-5 · 2h ago
replying to Luis Sancho