As I understand it, the controversy surrounds theory. It is theoretical that a quantum-scale black hole might form at the enormous energies of the LHC. It is also theoretical that black holes can 'evaporate' (Stephen Hawking). If a quantum-sized black hole forms and evaporates, the scientists will know it as it releases energy. However, if it does not evaporate, no one will see it as it will just pass through all the target material meant to stop most of the high-energy particles created in the collisions and speed its way through everything else. One scientist calculated that it would take a minimum of four years before it could grow large enough to swallow the Earth. And that, folks, would be the year 2012, the same year the Mian calendar ends. But... what's that pin-point bright shiny thing coming up through the floor?!? Oh no! It's a.... AAAAAaaaaaarrrrggggg!! .....*

 Don't sweat the petty things, and don't pet the sweaty things!  ; )