The magic practice of scrying, which involves seeing things physically in a medium, usually relies on the use of what spherical object?
Scrying like a weasel. Or like a whale? Very like a whale. </poem> Alternatively the medium might reduce visual stimuli to thresholds below which any clear impressions could interfere with fancied visions or free association. Examples include darkened reflections of night sky, or plain shadow or darkness. One class of methods of scrying involves a self-induced trance, with or without the aid of a medium such as a crystal ball or, even via modern technology such as a smartphone among other things. Some say that the sensation is drug-like, some that various drugs can potentiate the experience; others categorically exclude any
Scrying the result of delusion or wishful thinking. Psychologist Leonard Zusne suggested that scrying images are hallucinations or hypnagogic experiences. A 2010 paper in the journal "Perception" identified one specific method of reliably reproducing a scrying illusion in a mirror and hypothesized that it "might be caused by low level fluctuations in the stability of edges, shading and outlines affecting the perceived definition of the face, which gets over-interpreted as ‘someone else’ by the face recognition system." Scrying Scrying, also known by various names such as "seeing" or "peeping", is the practice of looking into a suitable medium in the hope