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Comment by Sabine Hossenfelder

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Theoretical physicist, science communicator.
Indeed, if the extra dimensions are large enough, you could create black holes at the Large Hadron Collider. At least in theory. In practice, the Large Hadron Collider did not produce black holes, which means that if the extra dimensions exist, they’re really small.
AI Verified (Apr 17, 2021)
Source:
Sabine Hossenfelder, “Does the Universe have higher dimensions? Part 2,” Backreaction, April 17, 2021.
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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 The quote discusses whether the LHC could create black holes and notes that none were produced in practice, which is directly relevant to the LHC black-hole risk statement. · Hector Perez Arenas gpt-5 · 1h ago
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AI Verified The quote treats LHC black holes as hypothetical, tiny, and absent in practice, which supports the statement, so for is correct. · Hector Perez Arenas gpt-5 · 1h ago

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AI Verified The Backreaction transcript says LHC black holes are only theoretical in the extra-dimensions scenario and did not occur in practice, matching the stored quote. · Hector Perez Arenas gpt-5 · 1h ago
replying to Sabine Hossenfelder