Most people like watching magic performances and they often feel surprised and excited at those intricate items. In fact, magic is not that mysterious. Frankly speaking, it cannot exist without specially designed props, carefully arranged performance, trained handling skills and scientific principles of acoustics, optics, electrics, chemistry, mechanics and color.
The performer(s) take the opportunity, sell the dummy and look one way and row another to divert audiences' attention so as to make use of their wrong impression of hearing and vision and produce many wonderful visions before them.
Performing ways of magic vary a lot, which all fall into the following categories -- make something out of nothing, turn something into nothing, reverse broken things to their original whole, transfigure instantly, mix the false with the genuine, quick transposal and so on. No matter which kind of performing way is employed, all magic performances involve application of certain scientific principles.
The value of magic performance lies in the surprise it creates and all the changes must be out of the expectations of the audience. Besides the skills with hands, the success of a magic item also requires special design and careful arrangement. Magic performances can broaden viewers' vision and trigger their interest in science.