To reiterate again (and again and again): empirical science does not produce anything but contingent factoids, refutable and contingent upon subsequent testing. It functions in the past, requiring an hypothesis, severe and rigorous testing, replication and peer review before the (still contingent) factoids are considered possible candidates for an explanation of some sort.
So depending upon empirical science to produce wise decisions for future programs and actions in government is an expectation bound not just for failure, but for disaster. Here's why.
Science is a subset of rationality.Read that again. Because that is not what science fetishists would have you believe. Rationality did not occur as a result of someones hypothesis-cum-experiment. Rationality is a superset of science. And science is just one of the subsets of rationality. And that's the crux of the fallacy of scientism as the guiding star for anyone, especially government.
Rationality is a superset for other human capacities and endeavors such as behavior and language. Behavior is not determined by empiricism, at least not solely. Perhaps some behavior is determined by personal emotions such as fear and greed. But any rational behavior is necessarily preceded by rationality itself.
And language absolutely fails to work without a prior rationality. Without it we could only babble gibberish, unintelligibly and without consequent comprehension.
Rationality is the superset, there is no (rational) doubt. But beyond rationality is wisdom, which is the accumulation of rational habits and the strength of both discernment and the will to use it. Science feeds rationality; rationality feeds wisdom. Wisdom is the superset that includes rationality. Scientism does not recognize that and in fact will reject the notion when confronted with it.
In discussing wisdom with materialists, I have found it common practice to reject the entire notion of wisdom, because it is uncomfortably close, indiscernably close, to the metaphysical. It exists only in subjective reality, not in objective reality. This, at a minimum, places it outside and beyond material existence. Therefore it must be rejected, if Philosophical Materialism is to be saved. To science fetishists, science IS wisdom, there is no difference. This is logically absurd.
The effects of scientism are easily seen in both the Scientific Socialism of Lenin and in the National Socialism of the Third Reich. So it is important that science fetishists deny this connection as well: it was hugely, genocidally, tortuously disastrous for the entire globe.
Yet the inclination to science fetishism persists. The cry for more money, more money is heard throughout the land, along with a seething resentment of perceived abuse by fiscal strangulation by President Bush. In fact science is one of the few endeavors that promises nothing in return for taxpayer wallet-diving. Science will do what it will do, if it can suck up the bucks to do it. Applied science is not what we are discussing here; we are discussing raw, unfettered science without a purpose. And the apologists who deify it.
Scientism is false for the reasons shown above. Wisdom does exist; it is informed by science, but also by history, as well as the knowledge that there are undeniable truths, that those truths exist outside the material realm yet inform the material realm, and the realization that denial of such truths leads to relativist, will-driven explorations into power and the horrors that such excursions bring.
Such excursions are often driven by "messiahs", drenched in "science". So, beware messiahs bearing scientism.