  Physical laws and social regularities alike limit the scope of chance, which is to say that they limit the scope of “indeterminate” force, or “undetermined” choice, or, as Du Bois likewise puts the point, of “free” and “inexplicable” will (ca. 1905, 276–278). In presupposing chance, sociology presupposes free will.  Sociology’s attempt to measure chance and free will is its attempt to measure the degree to which physical and social regularities limit and constrain the range of choice and action that is “undetermined by and independent of actions gone before”(ca. 1905, 278).