The Scientific Method and Objective Truth

The scientific method is a learning method that led to many discoveries about the physical world that have defined the modern period. Discoveries in agricultural production, medicine, and manufacturing have alleviated hunger and poverty, and have extended the life expectancy of the vast majority of people since the early nineteenth century. These discoveries has so dramatically improved the lives of modern and postmodern people that claims about the method have pervaded virtually all aspects of our lives. While almost no one discounts the usefulness of the method, the spillover of rational thinking into other aspects of life helped accelerate exploration of limits to its usefulness.

In its simplest exposition, the scientific method consists of series of steps in analytical thinking:

  1. Problem definition
  2. Observation
  3. Analysis
  4. Decision

In the problem definition step, the researcher forms an hypothesis. The researcher then proceeds to collect observations about this hypothesis in the second step. In the third step, the researcher analyzes these observations in view of other discoveries. In the final step, the researcher decides whether to accept or reject the hypothesis.

The flexibility of the scientific method to be applied to many aspects of the physical world accounts for its enormous usefulness. As researchers make new discoveries, they publish their finding so that other researchers can replicate their results. Thus, over time the knowledge of the physical world grows and is decimated throughout the scientific community and applied to practical applications in agriculture, industry, and medicine.

For many years, people believed that using the scientific method did not involve philosophical prejudices, but simply revealed facts about our world. This belief, however, came increasingly under scrutiny as researchers began to apply the scientific method especially in the social sciences. Scrutiny gave way to outcry during the Second World War as people learned of German scientists performing inhuman experiments on prisoners in concentration camps, such as learning the minimum nutritional requirements to prevent starvation, cold water survival rates, and so on. It soon became more widely understood that which problems came into focus in research involved serious philosophical and theological presumptions that had previously not gotten much attention.

One particularly important presupposition in the modern period and in the scientific method had to do with the nature of truth. Arising out of the Christian worldview came the assumption that one objective truth exists which, if we take the time to research, we can discover. This assumption is reasonable in the physical sciences; it is less tenable in the realm of social science, where cultural assumptions often dictate how particular activities are judged. For example, we can all agree on the weight of a particular bucket of sand, but we may not agree on whether to eat pork or whether it is acceptable to charge interest on a loan.

The existence of objective truth may sound like a trivial issue, but it becomes important in determining the status of professionals, such as scientists, doctors, lawyer, economists, and even pastors. If one objective truth exists, then it makes sense to consult the professional responsible for that subject matter. If truth is socially defined as is often argued in the postmodern period, then it is less clear which professional is most appropriate or whether a professional is even needed. In the church, for example, who is most suitable to preach and teach the Bible in which translation and with how much training? The answer to these questions are hotly debated within the church, in part, because we have come to doubt the nature and importance of objective truth.

Why do we care?

In the postmodern world that we live in, rational learning and decision making is still important, but the cynicism surrounding rationality is everywhere to be seen and it affects our attitude about anyone in authority. Prior to the modern period, authority stemmed primarily from wealth and political power in secular society and the church’s authority stemmed from reverence for God. In the modern period in America, authority still stemmed from wealth and political power, but this authority was increasingly tempered by the knowledge-based power of professionals and respect for God waned as rational thinking led many to question God’s existence. In the postmodern period, respect for both God and professionals has waned leading to the rise of authority based primarily on wealth and political power. In effect, if objective truth and God do not exist in people’s minds, then my truth and my group’s truth take center stage.

A second important result of this lack of belief in objective truth is that it undermines, not only professionals, but also respect for democratic and judicial process. On a theoretical level, if objective truth exists, then through debate and argumentation we come closer to understanding this truth, which is embodied in both our democratic and legal systems. If no objective truth is believed to exist, then debate and argumentation are simply a power play that does not enhance the credibility of the decision reached.

Therefore, the losing parties in debate or legal process have no inherent reason to accept the outcome of the process. This is why we observe so many sore losers on the evening news today that previously did not seem even to exist in popular culture. The postmodern rhetoric about the lack of debate in the modern period attributing the peace to an overwhelming majority of Americans being simply white is a half-truth, not the whole truth. Everyone believed in the American system, even when not everyone benefited equally. This why people still prefer to jump over the fence to come to America from other places. One seldom hears of people escaping to join most other, non-western destinations—it is not entirely about the differences in wealth.

While the modern period is clearly over, the challenges and risks that we face remain poorly understood without understanding the role played by the scientific method and objective truth in the world that we continue to live in.


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