Of course the rose in the vase and it's placement in the Helpful Friends corner according to Feng Shui, is not a matter of "magic" per se, not to mention the bow I added later. They are only to visually focus our intention. And impress ourselves with our goal or desire or need. The Force (to quote Star Wars) : ) or the Power of Intention is what we are utilizing here. Intention is a tug on the web of relations the physicists talk of, to bring closer an event or object or person that exists in the unmanifest state and bring it to the manifest.
A book > Teachings from the American Earth by Tedlock and Tedlock has an interesting article re the Hopi People who have concepts of the manifest and unmanifest in their sophisticated metaphysical philosophy. I highly recommend.