By the term Billiard-Physics (BP for short) I mean the Physics where all interactions are implemented via intermediate particles like the bosons W, Z, now Higgs H etc. For example QED, QCD or generally Quantum Field Theory are BP. You can examine any Feynman diagramm and you will see a table of billiard. The question is multiple:
1) Is your aesthetics OK with such a billiard?
2) Why such a theory is so accurate?
3) Does this mean that waves have been abandoned?