Magic is a way of thinking, in terms of symbolic correspondences rather than rational linear causation. Although art is now dominantly in a secular cultural context, art and magic are indivisible, as recognized by artists such as William Burroughs, Ted Hughes, Derek Jarman, Iain Sinclair, Alan Moore... as Jan Svankmajer said, 'Surrealism is an attempt to put the magic dimension back into art. Art which does not have this correspondence with magic is without any use.' No one who doesn't practise magical thinking will understand premodern people, or modern people, and certainly not be able to achieve manifest magical 'effects'.