In mathematics you don't understand things. You just get used to them. — Johann von Neumann. Hungarian and American mathematician and physicist (1903–1957) Mathematics, Understanding
The sciences do not try to explain, they hardly even try to interpret, they mainly make models. By a model is meant a mathematical construct which, with the addition of certain verbal interpretations, describes observed phenomena. The justification of such a mathematical construct is solely and precisely that it is expected to work.