A deep investigation of actual operational experience might provide hard data on pilot qualifications. Without proof, the debate over the 1,500 hour criteria will continue on a subjective level.
Dr. Ashley Nunes
The issues in these matters are quite complex and there are valid arguments on both sides. It is hard to determine what side is right and what opinions are biased; so it is useful to hear from an outside expert and the FAA’s primary researcher who documented the validity of the BA instrument.