`  == Scientific American ``Ask the Experts`` October 1999 ==  This column is neither peer reviewed nor secondary, and is therefore not a reliable source. It is merely a collection of the brief personal opinions from a variety of researchers, none of whom have any apparent familiarity with the subject. Unreviewed personal opinions are less reliable than news stories. But this source (``Schaffer 1999``, ``Schaffer and Morrison 1999`` etc.) is used no less than twenty times in the article to support absolutist statements such as, ``there are no theoretical explanations for how such elemental transmutations could occur, and the provided evidence is not strong enough to overthrow standard nuclear physics.`` Are there any reason that this source and the statements attributed to it should not be removed from the article?   `