Subject: Fundamental process of electron absorbing photon

Is it a fundamental property of electrons that they can absorb photons? 
Geometry requires that two points define a straight line.  Geometry does 
not prove this; it requires this.  Does physics require that electrons can 
absorb photons, or can physics prove this.  Can the system be explained in 
terms of the building blocks that combine to form electrons.  A tank 
destroys buildings.  To explain how, we must define what the tank does to 
the bricks and then define how this affects the entire building.  Why do 
we assume that the reaction between an electron and a photon can be 
explained at the level of the entire electron.  I want to know how does an 
electron absorb a photon at the level of the actual reaction; at the level 
of the bricks.  Can we define the precise interaction between a photon and 
some part of an electron at the moment that they merge.  Entropy and 
energy have no place here.  Such terms are used to define the likelyhood 
of an event occuring; not in the mechanism?  If we had a magical 
microscope through which we could view the process yet not affect the 
process, what would we see?

A thoughtful answer deserves my most sincere thanks.

Re: Fundamental process of electron absorbing photon