It looked to me that the movie didn't realize the implications of the resolution. If each new try from Gyllenhall was happening in a new stand-alone parallel universe, then by trying again and again he just generated copies of the same bombing and added more and more victims across the multiverse. So if at the beginning of the movie there were 1000 people sad from having lost a family member, after 5 failed tries now there are 5000 people sad. The only procedure that minimize the loss is to succeed on the first try, or to stop.
It looked to me that the movie didn't realize the implications of the resolution. If each new try from Gyllenhall was happening in a new stand-alone parallel universe, then by trying again and again he just generated copies of the same bombing and added more and more victims across the multiverse. So if at the beginning of the movie there were 1000 people sad from having lost a family member, after 5 failed tries now there are 5000 people sad. The only procedure that minimize the loss is to succeed on the first try, or to stop.