From The Daily Galaxy:
"Could Time Flow Backwards in Other Universes?" Rising Star Rocks Einstein With New Theory of Time
A rising star in theoretical physics offers his awesome vision of our
universe and beyond, all beginning with a simple question: Why does
time move forward? In January, Caltech physicist Sean Carroll will
release his much-anticipated debut book, From Eternity to Here: The Quest for the Ultimate Theory of Time.
SciFi buffs will grok out on his thesis that our perception of time is
informed by entropy — the level of disorder in a system. The basic laws
of physics work equally well forward or backward in time, yet we
perceive time to move in one direction only—toward the future and that
the movement from low to high entropy as the universe expands
establishes the direction in which time flows. To account for it, we
have to delve into the prehistory of the universe, to a time before the
big bang. Our universe may be part of a much larger multiverse, which
as a whole is time-symmetric.
