Along with at the European Organisation for Nuclear Research ( CERN ) and Jim Hartle , from 2006 on Hawking developed a theory of `` top-down cosmology '' , which says that the universe had not one unique initial state but many different ones , and therefore that it is inappropriate to formulate a theory that predicts the universe 's current configuration from one particular initial state .
[ 238 ] Along with Thomas Hertog at the European Organisation for Nuclear Research ( CERN ) and Jim Hartle , from 2006 on Hawking developed a theory of `` top-down cosmology '' , which says that the universe had not one unique initial state but many different ones , and therefore that it is inappropriate to formulate a theory that predicts the universe 's current configuration from one particular initial state .