  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.
