ABSTRACT
A scientific law is a hypothesis of a kind: a confirmed hypothesis that is supposed to depict an objective pattern. Every scientific formula is or can be analyzed into a propositional function, i.e. a certain combination of variables of various orders. The search for fundamental variables goes hand in hand with the search for high-level constant relations among them, i.e. rich laws. Partial identity is the basis for classifications, generalizations, and laws expressing the patterns or invariants of things and events amidst variety and change. The values of the properties related by a law may change from individual to individual and from moment to moment. There are as many kinds of scientific law as points of view or classification criteria we care to adopt. Among nonuniversal law statements those which are manifestly statistical are the most intriguing. Law formulas may accordingly be characterized as conceptual reconstructions of objective laws.
