Krauss takes you along to the very tiniest particles of matter, and beyond that, explaining how to even can exist, and explaining what we don't understand. And despite his genuine efforts to include the layman among his readership, by inventing analogies and visual explanations to give us a glimpse of what mathematics or what the Large Hadron Collider has revealed, the outcome is still as mystifying as it was before. But luckily not only to me, but also for particle physicists and astrophysicists who look in wonder at their findings, probably even more surprised than I am, because they can understand at least part of it : "Not only have our explorations revealed the existence of dark matter, which is likely composed of new elementary particles not yet observed in accelerators, but far more exotic still, we have discovered that the dominant energy of the universe resides in empty space - and we currently have no idea how it arises" .
But that makes it fascinating. Not an easy to read book, but fascinating stuff.