Sensors are measuring tools. In any measurement, we have at least two different kinds of interactants... We never know all there are to know about any one of these interactants and the interaction processes that are mostly invisible. Yet, our engineering innovation driven evolution is persisting for over five million years. It is then important to articulate explicitly our Interaction Process Mapping Thinking, or IPMT, which we keep applying in the real world without formally recognizing it. We present how the systematic application of IPMT removes century old wave-particle duality by introducing a model of hybrid photon. It seamlessly bridges the quantum and the classical worlds. Photons are discrete energy packets only at the moment of emission; then they evolve diffractively and propagate as classical waves. We apply IPMT to improve the photoelectric equation & we obtain Non-Interaction of Wave, or NIW. NIW was recognized by Huygens when postulating his secondary spherical wavelets, which is now integrated into Huygens-Fresnel diffraction integral, a staple for modern optical science and engineering. Maxwell wave equation accepts HF integral as its solution. Systematic application of IPMT to our causal and working mathematical equations, along with NIW in interferometric experiments, reveal that Superposition Effects can emerge only when the interacting material dipoles respond, whether classically or quantum mechanically, to the joint stimulations due to all the simultaneously superposed waves. This indicates the non-causality of our belief that a single indivisible photon can interfere by itself. We would not have a causally evolving universe had any stable elementary particle were to change itself through self-interference. Further, our working superposition equations always contain two or more terms representing two or more independently evolving entities. (read more)