Provides a unique perspective on the Schr dinger theory of electrons, one that does not appear in any other text on quantum mechanics
The unique perspective is that of the individual electron in the sea of electrons. It introduces the new concept of the 'Quantal Newtonian' second and first laws for each electron, the quantum analogue of the classical equations of motion for a particle
The laws are in terms of 'classical' fields that pervade all space, and their quantal sources. As such the perspective is tangible in the rigorous classical sense