"How about books, video, DVD's, instead of being trained in the method of somebody who's grandfather and great-grandfather were expert in the material being taught?"
i would say if your talking about a fad, then i can see the implications being based on little research, but there are plenty of books, dvd etc based on science and no this isnt a perfect world we live in but just because its traditional and "time tested" doesnt neccesarily make it good, sometimes it just works
this would be akin to comparing an olympic athelete 2000 years ago to pretty much any olympic athelete today, which imo the modern versions would dominate.