The conclusion that time is not quantized poses large problems for scientists. According to Lieu, "The Big Bang theory supposes that at the instant of creation, the quantum singularity that became the universe would need to have infinite density and temperature. To avoid that sticky problem, theorists invoked the Planck time. They said if the instant of creation was also a quantum event, when space and time were both blurry, then you dont need infinite density and temperature at the start of the Big Bang." Without quantum time, the universe becomes mathematically uglier at the moment of its inception. Like so many maps that were supposed to lead to the Holy Grail, our notions of quantized time have failed to lead us to a unified quantum theory.
http://www.astronomy.com/Content/Dynamic/Articles/000/000/001/219fcvov.asp
