Why does man struggle with keeping his focus on faith, which inspires hope. Hope is a result of the Word of God in action in our life. When God has His place in our life, all else falls into place, including science. In paragraph 17, the Holy Father is pointing out how a large percentage of mankind has replaced faith, the natural order, with science as the guiding light. That is why faith becomes displaced, so does hope.
17. Anyone who reads and reflects on these statements attentively will recognize that a disturbing step has been taken: up to that time, the recovery of what man had lost through the expulsion from Paradise was expected from faith in Jesus Christ: herein lay “redemption”. Now, this “redemption”, the restoration of the lost “Paradise” is no longer expected from faith, but from the newly discovered link between science and praxis. It is not that faith is simply denied; rather it is displaced onto another level—that of purely private and other-worldly affairs—and at the same time it becomes somehow irrelevant for the world. This programmatic vision has determined the trajectory of modern times and it also shapes the present-day crisis of faith which is essentially a crisis of Christian hope. Thus hope too, in Bacon, acquires a new form. Now it is called: faith in progress. For Bacon, it is clear that the recent spate of discoveries and inventions is just the beginning; through the interplay of science and praxis, totally new discoveries will follow, a totally new world will emerge, the kingdom of man.16 He even put forward a vision of foreseeable inventions—including the aeroplane and the submarine. As the ideology of progress developed further, joy at visible advances in human potential remained a continuing confirmation of faith in progress as such.
OF THE SUPREME PONTIFF