The term resonance has long been associated with the felt-depth of meaning and intuitively realized truth of haiku. It also plays a role in comprehension of the results of The Question and Answer Game. Both haiku and the surrealist Q&A Game are by design nonlinear, and both can create a window into some of the mysteries of non-ordinary consciousness. The dictionary definition of resonance tells us that it is “the ability to evoke or suggest images, memories, and emotions,” but within the realm of physics it is also clearly a factor of vibration. Resonance is also “the reinforcement or prolongation of sound by reflection from a surface or by the synchronous vibration of a neighboring object.” In the case of an individual responding to a work of literature or art, the implication of resonance is that there is some kind of energetic exchange and/or harmonious vibrational communion of heart (emotion) and of mind (memory/perception) involved. Something in the poem or artwork strikes a resonant chord within our being, a sense of expansion occurs, and we experience a recognition of Truth.
I personally find that the effect it is not too far off from that of the Sanskrit greeting Namaste, which loosely translates as The God within me recognizes the God within you.