Bopp and the future

[1604.04231] Time Symmetric Quantum Mechanics and Causal Classical Physics

Fritz Bopp, who I have never heard of,  from a university in a city or town I don't know, has nonetheless got a paper on arXiv that seems to have some interesting ideas (about causal structure and quantum physics); but I don't full understand them...

Update:  seems he is a physics professor, and Siegen is in Germany. (He is the son of Fritz Bopp, who also worked on quantum physics, but died in 1987.  I assume that father and son had some complicated discussions over dinner.)