Finding space-time quanta in the cosmic microwave background: Not so simple

�Final theory� is such a misnomer. The long sought-after unification of Einstein�s General Relativity with quantum mechanics would not be an end, it would be a beginning. A beginning to unravel the nature of space and time, and also a beginning to understand our own beginning � the origin of the universe.
The biggest problem physicists face while trying to find such a theory of quantum gravity