according to Nietzsche. "A thousand goals have there been so far," says Zarathustra, "for there are a thousand peoples. Only the yoke for the thousand necks is still lacking: the one goal is lacking. Humanity still has no goal." Hence, the title of the aphorism, "On The Thousand And One Goals." The idea that one value-system is no more worthy than the next, although it may not be directly ascribed to Nietzsche, has become a common premise in modern social science. Max Weber and Martin Heidegger absorbed it and made it their own. It shaped their philosophical endeavor, as well as their political understanding. Criticisms Virtually all modern philosophers affirm some sort of fact–value distinction, insofar as they distinguish between science and "valued" disciplines such as ethics, aesthetics, or the fine arts. However, philosophers such as Hilary Putnam argue that the distinction between fact and value is not as absolute as Hume envisioned. Philosophical pragmatists, for instance, believe that true propositions are those that are useful or effective in predicting future (empirical) states of affairs. Far from being value-free, the pragmatists' conception of truth or facts directly relates to an end (namely, empirical predictability) that human beings regard as normatively desirable. Other thinkers, such as N. Hanson among others, talk of theory-ladenness, and reject an absolutist fact–value distinction by contending that our senses are imbued with prior conceptualizations, making it impossible to have any observation that is totally value-free, which is how Hume and the later positivists conceived of facts. Functionalist counterexamples Several counterexamples have been offered by philosophers claiming to show that there are cases when an evaluative statement does indeed logically follow from a factual statement. A. N. Prior argues, from the statement "He is a sea captain," that it logically follows, "He ought to do what a sea captain ought to do." Alasdair MacIntyre argues, from the statement "This watch is grossly inaccurate and irregular in time-keeping and too heavy to carry about comfortably," that the evaluative conclusion validly follows, "This is a bad watch." John Searle argues, from the statement "Jones promised to pay Smith five dollars," that it logically follows that "Jones ought to pay Smith five dollars", such that the act of promising by definition places the promiser under obligation. Moral realism Philippa Foot adopts a moral realist position, criticizing the idea that when evaluation is superposed on fact there has been a "committal