By 1799 the number of Martha Washington's dower slaves had grown to 153; George Washington owned 124 people, and at least a dozen Washington-owned slaves intermarried.
Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells.
Occam's Razor-the principle that entities should not be multiplied needlessly; the simplest of two competing theories is to be preferred. law of parsimony, Ockham's Razor, principle of parsimony.