Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
I am a fan of Nancy Tillman's books and my older daughter's favorite is "On the Night you Were Born" - now that we are expecting our 3rd little one, I came across this gem of a keepsake and it's beautiful. Unlike scrapbooks and other baby keepsake books, Nancy's "You are Loved" is a mix of story telling and milestone recordings for your baby. It's just lovely.