On the subject of the improbability of our existence, the book turns to God’s nature for the conclusion that “We could never know an absolutely simple essence since the finite cannot comprehend the infinite”. (p. 95) Moreover, “How did God gain his knowledge? Where did he learn it? Does he know everything about himself as well?” (p. 96)
Whether God is simple or complex, has properties or is properties, is irrelevant to the discussion of the improbability of our existence. We were either designed or not, irrespective of God’s nature. Whether God was designed or not has no effect on the improbability of our own existence. Additionally, we can indeed know God if God so chooses to reveal Himself to us, which He clearly has done.