I learned a lot from the first half of this book about the likely origins of Islam. There are many parallels to the origins of Judaism. (I am a retired rabbi.) By that, I mean that much of the real, factual history of the origins and development of the religion is obscured by claims made by subsequent religious authorities. Honest, objective inquiry and scholarship enables us to think and to believe beyond the claims made by religious authorities who, through the centuries, have narrowed and rigidified what we are often told the religion stands for. Saqib's book does an excellent job at illuminating that dynamic in the history of the development of Islam.
Throughout the sacred journey of our lives, many of us seek to understand and express our relationship with the transcendent, all-present aspect of our being, and of all being, which we call God. We often look to religions to guide us in that search. Far too often, rather than foster and nurture that search, our traditional religions as we have received them, shut it down.
Although I am not a "capital-M Muslim", having read Saqib's book cover-to-cover, my sense is that the knowledge of Islam that he offers can encourage people born and raised in Muslim families as well as other people seeking to be guided by Islam to open their minds to better follow the promptings of their souls which led them onto the path of seeking in the first place.