Writing from the unconscious

According to Robert Olen Butler, "the nonartist knows exactly the effect they wish to have on the reader before they write a single word." Of the artist he says: “[T]he artist does not know. She doesn’t know what she knows about the world until she creates the object. For the artist, the writing of a work of art is as much an act of exploration as it is expression, an exploration of images, of moment-to-moment sensual experience. And this exploration comes from the nature of the artistic process.”

Shouldn't we all write that way, from the white center inside?