Do Fitelson, Sober, Stephen Law, and Draper successfully respond to the EAAN by showing that natural selection favors accurate cognition in important specific cases?

This debate lies at the heart of contemporary philosophy of mind and evolutionary epistemology. Plantinga's Evolutionary Argument Against Naturalism (EAAN) was first presented in 1993 and has evolved through decades of criticism and counter-responses. Today, the debate revolves around whether contemporary responses succeed in dismantling the argument, or whether they miss its central point.

Inadequate Responses to Avoid

From some defenders of EAAN:

"All the responses assume what they want to prove." Excessive oversimplification. The responses by Fitelson, Sober, Law, and Draper offer complex technical arguments, not mere circular assumptions. Rejecting them with this generalization ignores subtle philosophical details.

"Natural selection can never guarantee cognitive truth." Too strong a claim. Even Plantinga himself accepts that selection might favor some true beliefs in some cases. The debate concerns scope and reliability, not absolute possibility.

"The criticism ignores the fundamental problem: the probability of truth is low or indeterminate." This is precisely what the responses attempt to address. Claiming they "ignore" the problem misses the core of their arguments.

From some naturalists:

"EAAN is completely wrong, and the responses expose this." Counter-oversimplification. Most specialized philosophers acknowledge that EAAN poses a genuine challenge, even if they disagree about its strength. Complete rejection ignores the depth of the problem.

"Evolution guarantees the truth of our beliefs." A stronger claim than the evidence supports. Even the strongest defenders of evolutionary reliability accept the existence of systematic cognitive biases resulting from evolution.

"The problem is purely philosophical, unrelated to science." Incorrect. The debate intersects with evolutionary psychology, cognitive neuroscience, and applied epistemology.

Why These Responses Are Inadequate

They share in avoiding the technical complexity of the arguments presented. EAAN and responses to it require careful analysis of the relationship between evolution, cognition, and epistemic truth.

Basic Structure of EAAN

Plantinga argues:
1. In evolutionary naturalism (N&E), our cognitive faculties are products of blind natural selection.
2. Natural selection chooses adaptive behavior, not true beliefs.
3. Adaptive behavior can result from false beliefs (through multiple mechanisms).
4. Therefore, the probability of our cognitive faculties' reliability is low or indeterminate in (N&E).
5. Therefore, belief in (N&E) epistemically undermines itself.

Fitelson and Sober's Response (1998, 2003)

Elliott Sober and Branden Fitelson provided the strongest early technical response:

Central Point: The distinction between "indicators" and "internal structures." Natural selection can favor true beliefs if they function as reliable environmental indicators, even if selection doesn't "see" their internal content.

Bayesian Analysis: They used Bayesian probability theory to show that the probability of cognitive reliability in (N&E) is not necessarily low. It depends on details of the relationship between beliefs and behavior.

Frog Example: A frog catches flies with its tongue. Selection doesn't "care" about the frog's beliefs about flies, but it favors perceptual mechanisms that accurately track flies. Result: true beliefs about fly location.

Criticism of Plantinga's Central Point: Plantinga assumes that cognitive content is "invisible" to selection. Fitelson and Sober respond: even if not directly visible, it can be indirectly selected through its relationship to adaptive behavior.

Stephen Law's Response (2011, 2016)

Stephen Law developed the "basic environmental beliefs argument":

Crucial Distinction: Between beliefs about immediate environment (where is food, where is danger) and abstract theoretical beliefs (philosophy, mathematics, metaphysics).

Central Argument: Natural selection strongly favors true beliefs about immediate environment. An organism that wrongly believes a tiger is a "nice friend" won't survive long. An organism that correctly believes a tiger is a "dangerous predator" will avoid it and survive.

Cognitive Accumulation: Once a basic capacity to form true environmental beliefs evolves, it can be built upon. Language, logic, and science evolved from this solid foundation.

Response to Plantinga: Even if some abstract beliefs are evolutionarily unreliable, this doesn't undermine general reliability. It suffices that basic beliefs are reliable to build reliable knowledge.

Paul Draper's Response (2008, 2016)

Draper provided a more sophisticated analysis of the relationship between truth and survival:

Concept of "Biological Realism": Organisms that evolve accurate representations of survival-relevant reality have a clear evolutionary advantage.

Probabilistic Analysis: The probability of evolving reliable cognitive faculties in (N&E) is not low if we consider:
- Continuous selective pressure favoring perceptual accuracy
- The high cost of cognitive errors in competitive environments
- The cumulative advantage of correct knowledge across generations

Criticism of Plantinga's "Separation" Assumption: Plantinga assumes the possibility of separating cognitive content from behavior. Draper argues this separation is artificial in real biological systems.

Critical Assessment of the Responses

Strengths:

1. Useful Distinctions: The distinction between types of beliefs (environmental/abstract) and selection mechanisms (direct/indirect) clarifies the debate.

2. Concrete Examples: Examples of the frog and tiger make the abstract debate clearer.

3. Bayesian Analysis: Using probability theory places the debate in a precise mathematical framework.

4. Consistency with Cognitive Science: The responses align with research in evolutionary psychology and neuroscience.

Weaknesses and Challenges:

1. Generalization Problem: Even if selection succeeds in favoring true beliefs in specific cases, can this be generalized to all human knowledge?

2. Abstract Beliefs: The responses are stronger regarding basic environmental beliefs, weaker regarding philosophy and metaphysics.

3. Documented Cognitive Biases: Cognitive psychology documents dozens of systematic biases in human thinking. How does this reconcile with claims of evolutionary reliability?

4. Semantic Content Problem: How can a purely physical process (evolution) produce genuine semantic content? This is a deeper problem the responses haven't fully solved.

Recent Developments (2020-2026)

"Evolutionary Complexity" Stream: Argues that EAAN oversimplifies evolution. Evolution doesn't select isolated traits but integrated systems. Perception, behavior, and survival are intertwined in ways that make separating them artificial.

"Evolutionary Pragmatism" Stream: Accepts that our beliefs may not be "true" in the absolute philosophical sense, but are "evolutionarily adequate" enough for practical knowledge.

"Partial Accommodation" Stream: Partially accepts Plantinga's criticism: evolutionary naturalism faces problems justifying abstract knowledge, but this doesn't completely undermine it.

Where We Stand in This Debate Today

No consensus, but convergence on some points:

- Most philosophers accept that EAAN poses a genuine challenge deserving serious response.
- The responses succeed in showing that cognitive reliability is not impossible in (N&E).
- But the responses don't prove that cognitive reliability is likely or guaranteed in (N&E).
- The debate has shifted from "Is EAAN correct?" to "How strong is the challenge it poses?"

From the Perspective of Rational Preference (rajḥān ʿaqlī)

EAAN doesn't prove the impossibility of naturalism, but it reveals genuine internal tension. The responses don't completely resolve the tension, but they mitigate its severity. The debate continues with increasing technical sophistication and nuanced positions that avoid the extremes of complete acceptance or rejection.