Full Idea
String theory has more than 10-to-the-500th solutions, each describing a different sort of universe, so it is nigh-on impossible to find the one solution that corresponds to our geometrically flat, expanding space-time full of particles.
Gist of Idea
It is impossible for find a model of actuality among the innumerable models in string theory
Source
New Scientist writers (New Scientist articles [2013], 2015.11.07)
Book Reference
-: 'New Scientist magazine' [ 2013], p.32