 This solution typifies Wundt’s general view that the domains of psychic and physical phenomena do not stand in conflict, but rather constitute separate spheres of (causal) explanation. His interpretation of WL nicely illustrates how, on his view, physiological experiments can yield mathematically expressible results, not about the physical, somatic processes involved in sensation, but about the relationships among these sensations as apperceived, i.e., as psychological elements and objects of consciousness. He writes that “the psychological interpretation offers the advantage of not excluding a simultaneous [i.e. parallel] physiological explanation” (presumably once the neurophysiological facts of the matter have been better elucidated — cf. PP I: 391); by contrast, the two competing interpretations “only permit a one-sided explanation” of WL (PP I: 393).