But I was playing skyrim and I used a soul trap dagger on falmer (I have sneak 100, I have insance dagger damage...I am the ghost the falmer fear)
anyway, a grand or greater soul gem captured a falmer soul. I think it was a common soul I got.
anyway, this would mean that the falmer have not just physically devolved but spiritually devolved. It is kind of sad, as they were enslaved by dwemer.