Gee, Guest, it takes a lot of guts to defend a thesis in physics. I would not have imagined such fortitude from someone who logged in anonymously. But I am glad you're here because I need good physics guidance from time to time. As to the answer to your question, it remains to be seen what good such a classification scheme might or might not be. I assumed the paper was a peer-reviewed work. The real test, I expect, is whether such a scheme can reveal or predict hitherto unnoticed phenomena.

Regards,

A