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How should scientists respond to the allegation that our "faith" in logic and scientific truth is just that — faith — not "privileged" over alternative truths? An obvious response is that science gets results. As I once wrote, "Show me a cultural relativist at 30,000 feet, and I'll show you a hypocrite... If you are flying to an international congress of anthropologists or literary critics, the reason you will probably get there — the reason you don't plummet into a ploughed field — is that a lot of Western scientifically trained engineers have got their sums right." Science supports its claim to truth by its spectacular ability to make matter and energy jump through hoops, and to predict what will happen and when.

Many forms of relativism and subjectivism collapse into either self-contradiction or vacuity — self-contradiction because they end up claiming that nothing is the case, or vacuity because they boil down to the assertion that anything we say or believe is something we say or believe. I think that all general and most restricted forms of subjectivism that do not fail in either of these ways are pretty clearly false. It is usually a good strategy to ask whether a general claim about truth or meaning applies to itself. Many theories, like logical positivism, can be eliminated immediately by this test. The familiar point that relativism is self-refuting remains valid in spite of its familiarity: We cannot criticize some of our own claims of reason without employing reason at some other point to formulate and support those criticisms.

It is worth considering the strange media landscape in which political talk radio is a salient. Never before have there been so many different national news sources — different now in terms of both medium and ideology. Major newspapers from anywhere are available online; there are the broadcast networks plus public TV, cable's CNN, Fox News, CNBC, et al., print and Web magazines, Internet bulletin boards, The Daily Show, e-mail newsletters, blogs. All this is well known; it's part of the Media Environment we live in. But there are prices and ironies here. One is that the increasing control of U.S. mass media by a mere handful of corporations has — rather counterintuitively — created a situation of extreme fragmentation, a kaleidoscope of information options. Another is that the ever increasing number of ideological news outlets creates precisely the kind of relativism that cultural conservatives decry, a kind of epistemic free-for-all in which "the truth" is wholly a matter of perspective and agenda. In some respects all this variety is probably good, productive of difference and dialogue and so on. But it can also be confusing and stressful for the average citizen. Short of signing on to a particular mass ideology and patronizing only those partisan news sources that ratify what you want to believe, it is increasingly hard to determine which sources to pay attention to and how exactly to distinguish real information from spin.

I think in many ways it is the ultimate question: What is truth? How do we understand truth and what are the ways in which we wrestle with truth? And I believe that Theodor Adorno was right when he said that the condition of truth is to allow suffering to speak. He said that the condition of truth is to allow suffering to speak — that gives it an existential emphasis, you see, so that we’re really talking about truth as a way of life, as opposed to a set of propositions that correspond to a set of things in the world.

Understand this, I mean to arrive at the truth. The truth, however ugly in itself, is always curious and beautiful to seekers after it.

The possibility of being wrong is the price we pay for the possibility of being right. We are not speaking here of our degree of psychological certitude, but of the basic distinction between logical certainty and probability.

A little learning is a dangerous thing. This has never struck me as a particularly profound or wise remark, but it comes into its own when that little learning is in philosophy. A scientist who has the temerity to utter the t-word — true — is likely to encounter philosophical heckling that goes something like this: "There is no absolute truth. You are committing an act of personal faith when you claim that the scientific method, including mathematics and logic, is the privileged road to truth. Other cultures might believe that truth is to be found in a rabbit's entrails or the ravings of a prophet atop a pole. It is only your personal faith in science that leads you to favor your brand of truth." That strand of half-baked philosophy goes by the name of cultural relativism.

What characterizes the postmodern condition, then, is not a rejection of grand stories in terms of scope or in the sense of epic claims, but rather an unveling of the fact that all knowledge is rooted in some narrative or myth... The result, however... is what Lyotard describes as a "problem of legitimation"... since what we thought were universal criteria have been unveiled as just one game among many. If we consider, for instance, the reality of deep moral diversity and competing visions of the good, postmodern society is at a loss to adjudicate the competing claims. There can be no appeal to a higher court that would transcend a historical context or a language game, no neutral observer or "God's-eye view" that can legitimate or justify one paradigm or moral language game above another. If all moral claims are conditioned by paradigms of historical commitment, then they cannot transcend those conditions; thus every moral claim operates within a "logic" that is conditioned by the paradigm. In other words, every language game has its own set of rules. As a result, criteria that determine what constitutes evidence or proof must be game relative: they will function as rules only for those who share the same paradigm or participate in the same language game. The incommensurability of language games means that there is a plurality of logics that precludes any demonstrative appeal to a common reason. Recognition of the incommensurability of langauge games and the plurality of competing myths means that there is no consensus, no sensus communis. Many — especially Christians — lament this state of affairs... But is the problem as bad as we think? ... In the face of this problem, we must not lose sight of the fact that what constitutes the postmodern condition is precisely a plurality of language games — a condition in which no one story can claim either universal auto-legitimation (because of the plurality of "the people") nor appeal to a phantom universal reason (because reason is just one myth among others, which is itself rooted in a narrative). And this plurality is based on the fact that each game is grounded in different narratives or myths (i.e. founding beliefs).

I can promise you none of these things. No atmosphere of inquiry, for I will bring you to the land not of questions but of answers, and you shall see the face of God. "Ah, but we must all interpret those beautiful words in our own way! For me there is no such thing as a final answer. The free wind of inquiry must always continue to blow through the mind, must it not? Prove all things, to travel hopeful is better than to arrive." If that were true, and known to be true, how could anyone travel hopefully? There would be nothing to hope for. "But you must feel yourself that there is something stifling about the idea of finality? Stagnation, my dear boy, what is more soul-destroying than stagnation?" You think that, because hitherto you have experienced truth only with the abstract intellect. I will bring you where you can taste it like honey and be embraced by it as by a bridegroom. Your thirst shall be quenched.

This has given rise to different forms of agnosticism and relativism which have led philosophical research to lose its way in the shifting sands of widespread scepticism. Recent times have seen the rise to prominence of various doctrines which tend to devalue even the truths which had been judged certain. A legitimate plurality of positions has yielded to an undifferentiated pluralism, based upon the assumption that all positions are equally valid, which is one of today's most widespread symptoms of the lack of confidence in truth. Even certain conceptions of life coming from the East betray this lack of confidence, denying truth its exclusive character and assuming that truth reveals itself equally in different doctrines, even if they contradict one another. On this understanding, everything is reduced to opinion; and there is a sense of being adrift. While, on the one hand, philosophical thinking has succeeded in coming closer to the reality of human life and its forms of expression, it has also tended to pursue issues — existential, hermeneutical or linguistic — which ignore the radical question of the truth about personal existence, about being and about God. Hence we see among the men and women of our time, and not just in some philosophers, attitudes of widespread distrust of the human being's great capacity for knowledge. With a false modesty, people rest content with partial and provisional truths, no longer seeking to ask radical questions about the meaning and ultimate foundation of human, personal and social existence. In short, the hope that philosophy might be able to provide definitive answers to these questions has dwindled.