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Originally Posted by JTankers
Collider particles smash head on like a car collision and can be captured by Earths gravity, and relativity predicts micro black holes will not decay (Hawking called Einstein doubly wrong, yet it is Einstein who is repeatedly found to have been correct in his theories).
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At least you are trying to make a logical argument, which makes it possible to show where it is false. The particles in the LHC are moving at speeds close to 300,000 km/s, and the escape speed from Earth is 11 km/s. That means we would need two particles with an equal and opposite momentum to 11 parts in 300,000 to avoid making a black hole that escapes. Are you sure you want to argue that we expect "head-on collisions" of that kind of precision? Furthermore, the LHC websites referral to Hawking radiation is just trying to put off these absurd complaints, nobody really thinks that we need Hawking radiation to exist to avoid a black-hole danger. The real reason is that a black hole with the energy of a subatomic particle would be completely unimportant in every way, would be created by cosmic rays more often than at CERN, and would escape at close to the speed of light even if it were possible to make them that way.
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There is currently no reasonable proof of LHC safety, LSAG (LHC Safety Assessment Group) has been trying for months to prove safety without success. I hold the minority opinion that it may not be possible because it may in fact not be safe.
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A car accident has vastly more energy than an LHC collision, why don't you go trying to stop the manufacture of cars for fear their collisions might make black holes? No one can prove they don't, after all.
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any such novel particle created in nature by cosmic ray impacts would be left with a velocity at nearly the speed of light, relative to earth.
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So would LHC collisions, as I pointed out. Is that enough to put an end to this kind of argument, or will you just find another reason?
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Conversely, any such novel particle that might be created at the LHC would be at slow speed relative to earth, a goodly percentage would then be captured by earths gravity, and could possibly grow larger [accrete matter] with disastrous consequences of the earth turning into a large black hole.
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False. Come back when you've calculated the expected speed of these novel particles.
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If this thing is so safe, why arent CERN scientists allowed to express any personal fears they might have about this Collider?
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Big Brother mind control stops them. Er no, they don't have such personal fears.
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Alleged in the legal action: Chief Scientific Officer, Mr. Engelen passed an internal memorandum to workers at CERN, asking them, regardless of personal opinion, to affirm in all interviews that there were no risks involved in the experiments, changing the previous assertion of minimal risk.
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Let's brainstorm why this might be. Because the risk is really 1-10%, or because hysterical media can't be trusted to understand when scientists say a risk is too small to consider?