Within OS X Photos app, when I shoot jpeg/raw and upload to Photos, I get an image representing both files. By default I am looking at the jpeg. Or I can choose a command "Use Raw as Original".
I know conceptually that Raw contains more information and leaves the image processing to the computer not the camera. And I know conceptually that therefore I can possibly extract some more info out of the raw image file.
My question is as a practical matter, and specifically in Photos.app, what purpose is there to "Use Raw as Original"?