What is Simon Conway Morris's argument about "evolutionary convergence" as a possible theistic evidence, and does it succeed?

At the heart of the contemporary debate between evolution and design, Simon Conway Morris—paleontologist at Cambridge University and world expert on the "Cambrian explosion"—emerges with a distinctive argument that does not oppose evolution but employs it theistically. In his major work "Life's Solution: Inevitable Humans in a Lonely Universe" (2003) and subsequent works, Morris developed the evolutionary convergence argument as an indicator of teleological direction in the universe. This argument transcends the traditional "evolution versus design" debate to a deeper question: Is evolution itself directed?

Inadequate Responses to Avoid

From some defenders of theism:

"Morris proved that evolution is divinely directed." A misleading oversimplification. Morris is a professional evolutionary scientist who accepts Darwinian mechanisms in full. His argument is not against evolution but about interpreting a particular pattern within it (convergence). He does not claim "proof" but presents "indicators" worthy of contemplation within a broader context.

"Convergence refutes Darwinism." A fundamental error. Evolutionary convergence is a recognized phenomenon in evolutionary biology since Darwin himself. Morris does not use convergence to refute evolution, but to raise questions about its deeper meaning. Confusing "critique of reductionist interpretation" with "rejection of scientific theory" weakens the argument.

From some naturalists:

"Morris is just a disguised creationist." An unfounded accusation. Morris is a paleontologist with a distinguished academic record, his contributions to understanding the Cambrian are internationally recognized. His books are published by Cambridge University Press and discussed in reputable scientific journals. Rejecting his arguments through ideological labeling is an evasion of engaging with their content.

"Convergence has a simple Darwinian explanation: similar selective pressures produce similar solutions." This is partially correct but does not address the depth of Morris's argument. The question is not "Why do solutions converge?" but "Why are possible solutions limited in this way?" and "Why do they appear directed toward complexity and consciousness?" Mechanical Darwinian explanation does not answer these second-level questions.

Why These Responses Are Inadequate

They share a failure to understand the precise nature of Morris's argument. He neither attacks evolution nor defends direct design, but presents a reading of evolutionary patterns pointing to "structural constraints" in the universe that make the emergence of complex life and consciousness quasi-inevitable. This is a third position between creationism and reductionist Darwinism.

Structure of Morris's Convergence Argument

Evolutionary convergence is the phenomenon of unrelated organisms evolving similar forms or functions. Examples are countless:

- Complex eyes evolved independently 40+ times (vertebrates, mollusks, arthropods).
- Flight evolved independently in insects, pterosaurs, birds, bats.
- Echolocation in bats and dolphins.
- Social intelligence in primates, dolphins, crows, octopuses.
- C4 photosynthesis evolved 60+ times independently in plants.

Morris assembles hundreds of examples and argues: This pattern indicates that "morphological space" is not boundlessly open, but constrained by specific channels. Evolution appears to "discover" pre-existing solutions in reality's structure, not "invent" random solutions.

Most importantly: Morris traces convergence not only in simple forms, but in complex functions: perception, consciousness, intelligence, social behavior. His argument is that evolution tends quasi-inevitably toward complexity and consciousness—and this requires explanation.

Theistic Employment of the Argument

Morris himself is Christian, but cautious in linking science to faith. In "Life's Solution" he proposes that convergence "is compatible" with a teleological worldview without "proving" it. But others have developed his argument theistically:

First: If evolution is constrained by fundamental structures pushing toward complexity and consciousness, where did these structures come from? The theistic explanation: the universe is designed in a way that makes the emergence of conscious life quasi-inevitable.

Second: Extensive convergence indicates that natural laws are "fine-tuned" not only to permit life, but to direct it toward specific forms. This deepens the fine-tuning argument from the level of physical constants to the level of biological laws.

Third: The repeated emergence of consciousness indicates it is not an "accidental occurrence" but a "goal" embedded in the universe's structure. This aligns with the theistic conception of a universe created for purpose.

Naturalistic Responses

Stephen Jay Gould—before his death—was Morris's most prominent critic. In "Wonderful Life" (1989) Gould argued that evolution is radically random: if life's tape were replayed, a completely different world would result. Convergence, in his view, is an exception highlighting the general rule of randomness.

Richard Dawkins accepts convergence but explains it mechanistically: environmental problems are limited, optimal solutions are limited, so convergence is expected without need for teleological explanation. "Adaptive peaks" in the evolutionary landscape attract different lineages.

Sean Carroll and others argue that convergence at the morphological level does not mean convergence at the molecular mechanism level. Different eyes use different proteins and genes. This weakens the claim of "structural inevitability."

Strengths and Weaknesses

The strength of Morris's argument lies in its comprehensiveness and precise documentation. He presents hundreds of documented examples, connecting them in a convincing general pattern. It also does not oppose science but employs it, making it stronger than traditional design arguments.

Its weakness is that naturalistic explanation of convergence, despite incompleteness, remains possible. Also, the transition from "evolution is directed" to "therefore God exists" requires additional steps. Convergence alone does not determine the nature of the "director" if one exists.

Current Debate Positions

The debate has evolved in multiple directions. Andreas Wagner in "Arrival of the Fittest" (2014) mathematically explores "libraries" of possible solutions and argues they are richer than we imagine, explaining convergence without teleology. Manfred Eigen and Peter Schuster develop "adaptive landscape" models that mathematically predict convergence.

From the other side, Denton in "Evolution: Still a Theory in Crisis" (2016) expands Morris's argument to include biological "archetypes." Alister McGrath integrates convergence into contemporary natural theology viewing evolution as the "method of creation."

Where We Stand in This Debate Today

Evolutionary convergence is an established scientific fact, but its interpretation remains open. Morris's argument is strong as part of a broader pattern of indicators of cosmic teleology, but it is not decisive by itself. Developments in mathematical biology and comparative genomics deepen our understanding of convergence but do not resolve the philosophical question.

The rational position, within the method of rational preponderance (rajḥān ʿaqlī), is that widespread convergence—especially in complex functions like consciousness—constitutes important data to add to fine-tuning and cosmic order data. It does not prove theism but makes it more probable than a purely random universe.

For Advanced Reading

─ Advanced level: Molecular-level convergence and its implications
─ Advanced level: Adaptive landscape models and structural constraints
─ Simon Conway Morris, Life's Solution (Cambridge UP, 2003)
─ Stephen Jay Gould, Wonderful Life (Norton, 1989)
─ Andreas Wagner, Arrival of the Fittest (Current, 2014)
─ "Phenomenon: Evolutionary Convergence" page on the website