SGT-Miller
No one who I have researched says that point shooting is designed to replace aimed fire.
It is meant to complement it.
However, quite a few have stated that sights should always be used--Paul Howe, in fact, has written that sights should be used from 0-300 yards.
Here is a link to my home study course for those who wish to explore this topic on their own.
http://www.thehighroad.org/showthread.php?t=391040