This book I Decided to read after 'A Universe from Nothing' by Lawrence Krauss since I Wished to cross-reference the accounts. If you're a layman can Prove it tricky to follow all the courses, particle interactions and units of measure. So you May-have to re-read chunks of this book gold Indeed the whole text again. That Said, there are truly illuminating Some sections Where the 'Eureka' light ignites in your brain. For this reason alone, worth Taking the plunge.