Gardner breaks intelligence down into at least numerous completely different elements. In the primary edition of his e-book Frames of Mind , he described seven distinct forms of intelligence—logical-mathematical, linguistic, spatial, musical, kinesthetic, interpersonal, and intrapersonal. In a second version of this guide, he added two extra forms of intelligence—naturalist and existential intelligences. He argues that psychometric tests address solely linguistic and logical plus some elements of spatial intelligence. A major criticism of Gardner’s principle is that it has never been tested, or subjected to see evaluate, by Gardner or anybody else, and certainly that it is unfalsifiable.