 Even those who agree with the arguments of Cartwright and Lange sometimes disagree about what ultimately the arguments say about laws. Cartwright believes that the true laws are not exceptionless regularities, but instead are statements that describe causal powers. So construed, they turn out to be both true and explanatory. Lange ends up holding that there are propositions properly adopted as laws, though in doing so one need not also believe any exceptionless regularity; there need not be one. Giere (1999) can usefully be interpreted as agreeing with Cartwright’s basic arguments but insisting that law-statements don’t have implicit provisos or implicit ceteris-paribus clauses. So, he concludes that there are no laws.