One thing we have neglected to say so far is that Einstein's theory, which describes the macroscopic world so admirably well, doesn't work for the microscopic world.
Gerlach, the main proponent of reticular theory, had introduced the use of carmine and gelatin, and then gold chloride, to stain tissues for microscopic examination.
The theory of statistical dislocation link length distribution is an active field in the modern microscopic quantitative theory of metal plastic deformation.