The Presuppositional Argument: Atheists Cannot Account for Science


Science is the systematic attempt to understand the natural world. Through the scientific method it seeks to discover general laws that explain the diverse phenomena of our experience. The scientific method is that the scientist observes the world, notes patterns, and formulates generalizations about some aspect of it. These generalizations or hypotheses are then tested by experiments and are either confirmed or disconfirmed. Those that are confirmed become theories or laws. These laws then provide a heuristic for forming new hypotheses, and the process begins all over again.

Though overly simplified, both Christians and atheists agree with this conception of science. The atheist, though, often thinks that science and religion are incompatible. Science is rational, but religion is a matter of faith. And faith amounts to irrationality and superstition. Religion, moreover, is dogmatic, and dogmatism has no place in science. The atheist thinks we must choose one or the other. If we choose religion, we cannot have science, and if we choose science, we cannot have religion.

As it turns out, science and religion (meaning, of course, the Christian religion) are not incompatible as the atheist claims. In fact, religion provides the necessary preconditions for science. Apart from Christianity, science lacks a foundation. And since the atheist rejects Christianity, he must reject science as well.

To prove this, we will look at the scientific method and ask how we are justified in believing that it leads us to truths about the world. Though we could choose any number of the components of the scientific method, the principle of induction is probably the easiest one to focus on. Induction is often said to be the pattern of reasoning that moves from particulars to generalities. (This is not quite how a logician would define it, but it is sufficient for our purposes.) Today the sun rose in the east; yesterday the sun rose in the east; and every day in recorded history prior to yesterday, the sun rose in the east. We conclude that the sun always rises in the east.

Many philosophers, though, have questioned the propriety of inductive reasoning. Hume was the first, but others, including Karl Popper in the twentieth century, have rejected it as a reliable form of argumentation. Why is it reasonable, they ask, to accept the conclusion of inductive arguments? This is called the problem of induction. If the atheist fails to offer a viable solution, he has no basis for his adherence to science.

The atheist typically justifies induction on the grounds that the universe operates in uniform and law-like ways. If nature is uniform—where the future will operate the same as the past—then the atheist does appear to have justification for induction. But this only pushes the problem to another level. How does the atheist know that nature is uniform? Why in a world that is not created by a sovereign Creator does he think that the world behaves in an orderly manner? In so far as the atheist attempts to answer this question (most just take the uniformity of the world as given), his answer is viciously circular.

The atheist typically says that our experience of the world gives us warrant to believe that nature is uniform. He argues that since all of our previous experience of the world has been that the world operates in regular and uniform ways, it is reasonable to conclude that the world has always operated in the same way and will continue to do so.

There are at least two problems with this argument. First, the premise may be called into question. Is it really the case that all of our experience has been that the world operates in a uniform manner? Perhaps most of our experience is like this, but all have experienced what appear to be incongruities. Bertrand Russell notes that the chicken that has been fed every morning expects that this morning is not different. But this morning the farmer comes to wring its neck and serve it up for supper.

Even if the atheist can provide an adequate defense to this objection, a more difficult objection for him to answer is the second problem. His argument that all past futures have been like the past, and therefore the future will probably be like the past as well, is itself an inductive argument. But this begs the question. We began by asking the atheist to provide an account for induction. He argues that since the world is uniform, he has an account. But when asked how he knows that nature is uniform, the atheist makes recourse to an inductive argument. This is no solution at all. The atheist, thus, can provide no account for induction; and without induction, he cannot account for science.

Where the atheist offers a viciously circular defense of induction, the Christian does not. The Christian worldview teaches that God is providentially in control of all events. God has revealed to us that we can count on regularities in the natural world. “He appointed the moon for seasons: the sun knoweth his going down” (Ps. 104:19). He providentially causes the harvest to come in due season. Nature is uniform because God makes it so. Since nature is uniform, the Christian can account for induction. And with induction, he can account for science as well. So while the atheist touts science as being on his side, the reality is that only the Christian worldview provides the precondition for science.

Michael R. Butler. “The Pulling Down of Strongholds: The Power of Presuppositional Apologetics.” Faith for all of Life, January 01, 2007. The Chalcedon Foundation.