When I picked up "Sum: Forty Tales from the Afterlife" by David Eagleman, I was doing what I always do - judge a book by it's cover. From the word "Afterlife" I expected a book where people were telling credible but non-verifiable beyond-death stories.
Instead, what we have here is 40 speculations about how our universe works and what we'll find out in the afterlife to confirm or contradict that speculation. Although it consists of pure, unadulterated, speculation (or "mysteries" as they used to tell my dad in Sunday School) I still found the book interesting . I can't remember now, but there is one branch of philosophy that predicts ALL our views will be confirmed in the afterlife. Thus, Mormons in the afterlife will be whisked away to their multi-staged heavenly kingdom and won't really think about where the others went. And those who haven't believed in an afterlife will simply sleep forever. In effect, he, too, will have his belief confirmed.
I digress. Sum's speculations go from the universes where the creator i s a whimsical fellow who "experiments" with various universal constants to another where the creator intended the human species to be little mapmakers.
Another intriguing scenario has "heaven" populated only by those people whom we knew ion Earth. The beter we knew someone or something, the more prominent part they played in our afterlife.
Another chapter and David Eagleman is describing a type of Indian Reincarnation where your progress is not based on moral purity or spiritual growth but on our intellectual growth and choices.
As a discussion stimulator, this book is good. But most people will find the speculations too unbelievable. But that's the point. A god who is bigger and more powerful than this universe and controls all tha goes on in it is also difficult to conceive. The question becomes which is the more unbelievable.