Well a Makeshift Pilot Licence (MPL) holder can possess all the
commonsense and intelligence in the world but he will still be
as useless as tits on a bull whenever it comes to making a life
threatening judgement call.
Its instilled airmanship and a healthy dose of experience that
makes all the difference - we flew 727s, DC9s and F27s very
safely indeed well before CRM was invented.