Case Study 1: The Evolution Curriculum

The Situation

The Ridgecrest Unified School District is holding its annual board meeting, and the agenda includes an item that has attracted unusual public interest: a proposal by two board members to require that biology teachers "present intelligent design as an alternative scientific theory alongside Darwinian evolution" when teaching units on the origin and diversity of species.

The proposal has significant community support. Several local religious leaders have written letters arguing that Darwinian evolution is a materialist philosophical worldview dressed up as science, that it contradicts the religious beliefs of many families in the district, and that "academic fairness" requires presenting alternatives. A local attorney has submitted a brief arguing that presenting only evolution amounts to promoting a secular worldview in violation of the religious neutrality required of public schools.

The high school biology teachers are uniformly opposed. They argue that intelligent design is not science and does not belong in a science curriculum. The state's science curriculum standards — which Ridgecrest must follow to maintain accreditation — require teaching evolutionary biology as the foundational framework of modern biology. The teachers are worried that including intelligent design as an alternative scientific theory will confuse students about what science is, undermine their preparation for college-level biology, and expose the district to legal liability (referencing the 2005 Kitzmiller v. Dover Area School District federal court ruling, which found that teaching intelligent design in public school science classes violated the Establishment Clause of the First Amendment).

The board must decide: Should intelligent design be presented alongside evolution in the biology curriculum?

What Is Intelligent Design?

Before applying philosophical frameworks, it's important to understand what intelligent design (ID) actually claims.

Intelligent design is the position that certain features of living organisms are best explained by an intelligent cause rather than an undirected process such as natural selection. Its main proponents, including biochemist Michael Behe and philosopher Stephen Meyer, argue that biological structures such as the bacterial flagellum are "irreducibly complex" — they could not have evolved by gradual selection because removing any one part would make the whole structure non-functional, meaning there is no selectable intermediate form. They also argue that the specified complexity of biological information, particularly DNA, is the kind of complexity that we only know to arise from intelligent agency.

Intelligent design differs from young-earth creationism in that it does not necessarily claim the Earth is thousands of years old, and it does not commit to a specific creator or religious account. Its advocates argue it is a scientific hypothesis that follows the evidence wherever it leads.

Framework Analysis

Popper's Falsificationism: Is Intelligent Design Science?

The most direct application is Popper's criterion. Is intelligent design falsifiable? Does it make predictions that could in principle be shown false by evidence?

The core ID claim — that certain features of organisms are best explained by an intelligent cause — is structurally difficult to falsify. If a biological structure appears to be irreducibly complex, that is taken as evidence for design. If subsequent research shows a selectable evolutionary pathway for that structure (as has happened with the bacterial flagellum, for which evolutionary antecedents have been identified), the ID advocate can respond in one of two ways: either accept that this particular structure is not irreducibly complex while maintaining that others are, or question the completeness of the evolutionary account. The core claim — that an intelligent designer is at work — is not itself falsified by explaining particular biological structures, because the claim is not specifically about those structures but about biology in general.

Compare this to evolutionary theory. Evolution makes specific, falsifiable predictions: genetic similarities between related organisms should reflect phylogenetic relationships; the fossil record should show ancestral forms for modern species in older geological strata; we should find transitional fossils; homologous structures (the same bone structure appearing in the arm of a human, the flipper of a whale, and the wing of a bat) should be traceable to common ancestors. Each of these predictions could in principle fail. That they consistently succeed, across independent lines of evidence, is why evolutionary biology is scientifically well-established.

A Popperian verdict: evolutionary theory is scientific by the falsifiability criterion; intelligent design, as typically formulated, is not — because it can accommodate any possible finding and does not make specific, risky predictions that could be shown false.

This doesn't mean ID is false. Unfalsifiability means "not science," not "definitely wrong." The Popperian analysis is about the epistemic category of the claim, not its truth value. But if ID is not science, it does not belong in a science curriculum as an alternative scientific theory.

Kuhn's Sociology of Science: The Paradigm Question

Kuhn's analysis adds a different dimension. Evolutionary theory is not just a theory; it is the foundational paradigm of modern biology. It organizes research questions, determines what counts as a puzzle, provides the framework within which all of molecular biology, genetics, ecology, and medicine makes sense. No other framework in biology has comparable explanatory scope or has been as productive of new discoveries.

ID is not a competing paradigm in Kuhn's sense. A paradigm generates a research program — it gives scientists puzzles to solve and tools to solve them with. What research program does ID generate? What experiments would ID theorists run? What predictions would they test? Critics argue that ID has not generated productive scientific research; its proponents have largely been engaged in critiquing evolutionary theory rather than developing an alternative framework that generates new predictions and discoveries.

Kuhn would also note the sociological point: the consensus of the relevant expert community — biologists — is essentially unanimous in rejecting ID as science. This is not merely an appeal to authority; it reflects the fact that the community of people best positioned to evaluate these claims, using the standards appropriate to their field, has reached a settled verdict. Kuhn's account of scientific authority grants this kind of community consensus significant weight.

The Four Models: What About Religion Class?

The most interesting aspect of NOMA applied to this case is what it implies for curriculum design. If NOMA is correct — if science and religion occupy non-overlapping magisteria — then:

1. Intelligent design, understood as a theological or metaphysical claim about the role of an intelligent agent in biological history, belongs in a theology or philosophy class, not a biology class.
2. Evolution, as a scientific account of how species change over time, belongs in biology class.
3. There is no conflict between these as long as each stays in its proper domain.

The Dialogue model would add: students would benefit from a course — perhaps in philosophy, or in a combined religion-and-science course — that addresses the genuine intellectual questions raised at the boundary. Does the evolutionary account of the origin of human consciousness raise philosophical questions about the nature of mind? Does the evidence of evolutionary convergence — the independent evolution of similar structures in unrelated lineages — raise questions about whether there is directionality in evolution? These are genuine questions that thoughtful people engage. They belong in humanities or philosophy courses, not in science classes where students are learning to practice scientific reasoning.

The Epistemic Harm Question

The biology teachers' concern is partly about epistemic harm: presenting ID as an alternative scientific theory in a science class misrepresents what science is, how it works, and what its standards are. Students who emerge from that class believing that "intelligent design and evolution are both scientific theories with roughly equal evidential support" will be systematically misinformed — not just about biology, but about the nature of scientific inquiry.

This is a genuine epistemic concern. Epistemic harm in education is not just factual error; it is teaching students dysfunctional epistemic habits — in this case, the habit of treating theological proposals and empirically tested scientific theories as epistemically equivalent. Students who develop this habit will be poorly equipped to evaluate scientific claims in any domain.

Discussion Questions

1. One common argument for including ID is "fairness" or "presenting all sides." Apply the epistemological frameworks in this chapter to evaluate this argument. Does epistemic fairness require giving equal time to every position? What is the appropriate standard for what gets presented as a live scientific option?

2. A proponent of ID argues: "You can't prove evolution is true. It's just a theory." What is the philosopher of science's response to this argument? What does "theory" mean in science, and what would it take to "prove" a scientific theory?

3. Suppose a student in the biology class is a deeply religious young-earth creationist. She believes genuinely that the Earth was created approximately 6,000 years ago. What is the pedagogical responsibility of a teacher who is required to teach geological and biological evidence that contradicts this belief? Apply NOMA and the Dialogue model to this question.

4. The Kitzmiller v. Dover court found that ID is a religious claim rather than a scientific one. The court essentially made a demarcation decision. Is a federal court an appropriate body to make such a decision? What expertise would the demarcation decision require, and who should have authority over it?

5. If intelligent design were reformulated to make specific, falsifiable predictions — for example, that analysis of a particular biological structure would find no selectable intermediate forms — and those predictions were tested, would it then count as science? What does your answer reveal about the relationship between content and methodology in scientific demarcation?