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I have expanded the legal 'Legal challenges' section a bit to quote Johnson's appalling statement on p. 874 of his paper, that "Given such a state, it is not clear that any particle-physics testimony should be allowed in the courtroom", which I think deserves thought and attention.
Taken seriously, it really might arrest the whole LHC project, and also seems to have the potential to stop any kind of future technical investigation demanding great specialized knowledge, if challenged by some allegedly serious danger. Yet his argument does not seem quite ridiculous, given the realities of the human world—much as I (biased as I am) wish it could be dismissed out of hand. Wwheaton ( talk) 18:55, 30 December 2014 (UTC)
The mention of the position of Toby Ord and the rest of us co-authors of the arXiv:0810.5515 paper is slightly wrong: we are criticising the risk assessment rather than arguing that there is a relevant risk. Basically, for very low-probability risks the probability of an error in arguments trying to bound the risk overshadows the risk itself, requiring a more robust assessment procedure than has been used in the past (especially since we are talking about a potential existential risk). Since I am a co-author of the paper I will refrain from tampering with that part of the text, but it should be updated since the reading is not correct. Anders Sandberg ( talk) 19:45, 15 April 2015 (UTC)
This article fails to explain how it is possible to have ultra high energy particles hit the earth at speeds even close to the LHC due to the basic fact that universal expansion inherently slows them down by the red shift that occurs naturally as they travel to us. Jeff Carr ( talk) 19:41, 28 August 2015 (UTC)
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While they don't pose an existential danger to the planet/universe, particle colliders are hazardous facilities, with risks that include high levels of ionising radiation, gas leaks in enclosed spaces (asphyxiation hazard), high-voltage equipment, working from a height, heavy crane loads (the LHC's only fatality [1]) and potentially flooding or tunnel collapse if located underground. I understand that the exciting science-fiction hazards receive more public attention, but it seems silly to ignore the everyday ones. — dukwon ( talk) ( contribs) 12:01, 24 June 2022 (UTC)
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