MacKay does a great job of focusing on the important issues and avoiding the extraneous. In a nutshell, the book explores the nature of the human sciences and considers the ramifications of various outcomes on a christian belief system; e.g., what would it mean if humans were shown to be nothing more than automata. Rather than stirring up fear, the author motivates an authentic scientific look at humanity and places human significance not on our intellect or any other physical feature or accomplishment, but rather on the value that our Creator places on humanity. Although the book is dated, the author avoids the specifics of particular technologies and sticks to the issues, which remain timeless.