Indeed this comes down to the definition of Magick ('K' to differentiate from stage magic).
Although old, James Frazer’s definition of magic as an attempt to control the supernatural forces, in contrast to submitting to them in religion, has shown itself to be very enduring.
Crowley's definition seems to be the most accepted in the Occult community "the Science and Art of causing Change to occur in conformity with Will".
Black Magick is where the magician explores the hidden and unknown, thus dark, aspects of existence and works with the transforming forces of chaos, whereas other types of Magick is of a more religious nature and works with the existing structures and the preserving forces of cosmos.
The process can be seen in three principles:
-The first principle can also be understood as visualization, meaning that the magician focuses his/her mind and will on something to achieve.
-The second principle, power, builds on the first principle. The prospect is that the magician gains knowledge of the world, real knowledge of the whole of existence while ‘wearing a pair of nondistorting spectacles’. The magician must, however, use a part of his/her own power or energy in order to gain access to the unlimited energy outside the glass cover, and the unlimited energy and power inside himself as well. He uses his power and the limited power/energy in the glass cover in order to see the “other side”. By seeing this “other side”, the magician is thought to gain access to the energy outside, and can use this energy to gain better and deeper insight, as well as more power to do so.
-The third principle, action, is the finalizing aspect of the three principles. The magician has a vision, insight into how he or she wants something to be, as well as insight into the true state of reality. Through knowledge of the real the magician has gained power and has further multiplied this power in accessing the world outside our limited perception. The final stage of magic is to act out the changes one wishes to occur.
So in essence it is most likely impossible to recite a few cool Enochian Words of Power and have something happen immediately in the material World. True Magick takes place in a more gradual pace and the desired outcome is 'nudged' by the Magician's Will in the physical World.
But of course I didn't answer the OP's question!
I am curious as to the evidence for magick
A real evidence as to a very real type of Magick is with the advertising agencies and can be experienced every day.