In this book, four different views are represented. You have a no-historical Adam approach, advocated by Kenton Sparks; a mytho-historical approach by William Lane Craig; a genealogical Adam and Eve view by Andrew Loke; and the Young Earth Creationist view by Marcus Ross. This format was different than the other four-view books. In this volume, they gave the essayist a chance to give a short reply to the critiques. I liked this format, it allowed the essayist to clear any misconceptions and strawmen that were in the critique.
The first view by Sparks lays out the fundamental difference between himself and the others, in that he is not an inerrantist. In fact, inerrancy, in his view, has led to many beliefs that are not supported by modern-day science. He agrees with Ross (the YEC) that the Biblical authors thought the earth was no older than 10,000 years but in light of all the evidence we know this not to be true. Thus, he opts for Genesis 1-11 being some kind of theological fiction.
The second view advocated by Bill Craig was the mytho-historical view. In this view, Genesis 1-11 shares many similarities with ANE myths of its day, but due to the genealogies and NT evidence it seems to be more than just a myth. In fact, Paul in Romans 5 seems to imply that Adam was historical as well as his fall. So these events and persons are real but coated within the genre of myth, hence mytho-history.
The third view advocated for a genealogical Adam and Eve, which was made popular by Swamidass' recent book. Loke's contention is that the Bible does not place its emphasis on genetics but rather on genealogy. With the hints that there were other people outside the garden, Adam and Eve's offspring would have cohabitated with them, thus we are all related to Adam and Eve genealogically.
The last view is advocated by Marcus Ross, who just holds to the YEC view. He argues for a type of wooden literalism, while not really arguing for this position until he gets to passages in the NT (2 Pet. 3). He asserts that the earth is only about 10,000 years old and that Adam and Eve were recent.
In conclusion, this book was a wonderful survey of differing views. I myself do not really hold to any of these views presented in this book but found this to be really helpful. Everyone communicated with Christian charity which was refreshing to see. If I had to rank who did the best, I would say William Lane Craig presented the best case, followed by Loke, then it's a toss-up between Sparks and Ross. My bias I suppose is that I am a theistic-evolutionist.