Covering a history of quantum mechanics leading into an explanation of entanglement The God Effect does a good job at explaining why the concept is exciting whilst keeping expectations realistic. The book shows its age in some places, the fact it was written on a 256mb computer for one, but also he talks about the Higgs Boson & the implications that would have if it is proven to be real, which of course it now has been. Whilst I understood the vast majority of this book some parts remain confusing though I suspect a 2nd read would be enough to fill in the gaps. The main problem with the book I found was the ballance between theoretical physics and history / simple mathematics. I would say 50% of the book is history, 25% explanations of existing maths / computer science and then 25% on the entanglement itself. I would prefer much more on entanglement, either a longer book or just editing out some of the history or the simple maths parts.