The Jesuit's approach was groundbreaking because "it was not a simple reconciliation of science and faith; it was integrating, creating a single, wholistic vision because the past danger was having a radical separation" of the two.
A Vatican source explained that whenever the pope is invited to such a large public event he does not see the guest list in advance nor is the list checked by Vatican officials, as they trust the organizers of these gatherings to act in a responsible way.