
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?Time moves forward, not backward-everyone knows you can't unscramble an egg. In the hands of one of today's hottest young physicists, that simple fact of breakfast becomes a doorway to understanding the Big Bang, the universe, and other universes, too. In From Eternity to Here, Sean Carroll argues that the arrow of time, pointing resolutely from the past to the future, owes its existence to conditions before the Big Bang itself-a period modern cosmology of which Einstein never dreamed. Increasingly, though, physicists are going out into realms that make the theory of relativity seem like child's play. Carroll's scenario is not only elegant, it's laid out in the same easy-to- understand language that has made his group blog, Cosmic Variance, the most popular physics blog on the Net.From Eternity to Here uses ideas at the cutting edge of theoretical physics to explore how properties of spacetime before the Big Bang can explain the flow of time we experience in our everyday lives. Carroll suggests that we live in a baby universe, part of a large family of universes in which many of our siblings experience an arrow of time running in the opposite direction.
Hypothesis - a proposed explanation for something (such as a phenomenon of unknown cause) that is tentatively assumed in order to test whether it agrees with facts that are known or can be determined.
Theory - a scientifically acceptable or plausible general principle or body of principles based on data and offered to explain phenomena
Just because those outside of scientific fields use them interchangeably doesn't change the fact that they carry different meanings in scientific contexts.
I suspect though he would take issue with the description “illusion”. An illusion implies a trick, believing something that isn’t real. I think he would say emergent phenomena are real phenomena that we really experience and that time while it might not be fundamental it is very real.
The book isn't particularly about the Big Bang (it's more about the nature of the arrow of time), but it has to deal with the subject in passing.
I can also recommend the video series The Biggest Ideas in the Universe [1]. These are a superb explanation of how modern science has arrived at the conclusions it has. You can jump ahead to the Cosmology video, if you must, but you're missing the full experience of building up an understanding that goes far beyond the usual crayon drawings the press gives us.
[1] https://www.youtube.com/playlist?list=PLrxfgDEc2NxZJcWcrxH3j...