Chimpanzee Violence Is Not Human War
Humans may descend to animal-like behavior.
But animals do not “ascend” to human war.
Chimpanzee Violence Is Not Human War
by John D. Wise, PhD
A widely reported study of chimpanzees in Uganda describes a rare and sobering event: a long-standing social group of Pan troglodytes split into two factions, followed by years of lethal violence.
Over decades, researchers documented a fascinating transition from unity to division.
But almost immediately description gives way to explanation, and the line between the two begins to disappear.
Lethal conflict after group fission in wild chimpanzees (Science, April 9, 2026). The observations are detailed, meticulous and interesting. Over decades of study, researchers documented a transition from unity to division:
“a transition from cohesion to polarization in 2015 and the emergence of two distinct groups by 2018. Over the next 7 years, members of one group made 24 attacks, killing at least seven mature males and 17 infants in the other group.”
There is no controversy here. The data are the data.
The problem begins when interpretation is subtly folded into the observation.
From Observation to Assumption
The authors declare:
“These findings indicate that group identities can shift and escalate into lethal hostility in one of our closest living relatives in the absence of the cultural markers often thought necessary for human warfare.”
The study is framed as bearing on the origins of human warfare. But that move is not observational. It is inferential, and it depends on assumptions that are never examined.
- Chimpanzees must be taken as ancestral analogues.
- Their behavior must be taken as proto-human.
- Their conflict must be taken as pre-figuring human war.
All of this is supplied by the evolutionary framework. And no effort is taken to question the strength of the analogy itself.
The paper concludes:
“This study encourages a reevaluation of current models of human collective violence. If chimpanzee groups can polarize, split, and engage in lethal aggression without human-type cultural markers, then relational dynamics may play a larger causal role in human conflict than often assumed.”
But … this research provides data about chimpanzee social interaction, not about human “collective violence,” or war with its very specific characteristics. The authors even acknowledge this fact:
“Nonhuman species do not have religion, cultural institutions and political ideology.”
In other words, chimpanzee aggression as an analogue for human war is weak, at best, as those are the very structures that define human war.
The Missing Distinction
Civil war among wild chimpanzees: A violent split in a group of chimpanzees highlights the evolutionary roots of war and peace (Science, April 9, 2026). This accompanying perspective piece sharpens the point:
“Groups exist in the minds of their members and … are dynamic systems shaped by evolution.”
But this is precisely where the categories blur and the analogy weakens.
Chimpanzee “groups” are behavioral networks.[1]
Human groups are symbolic, moral, and conceptual unities.
To treat the former as an early version of the latter is not an observation. It is an interpretive overlay.
The Disney Effect (Again)
What we are witnessing here is a sophisticated version of the Disney Effect. This is a cultural conditioning so pervasive that we instinctively project our own conscious experience, nuanced emotions, and “belief revision” onto animals. When a researcher blinks at a baboon and becomes convinced of a “full, nuanced, and idiosyncratic” inner life, they are bringing more to the table than a shared glance. They are projecting a human reflection into an animal eye.
In the case of the Ngogo chimps, the Disney Effect operates by rebranding behavioral network dynamics as an analogue of human cultural conflict. This terminology suggests a level of self-aware, symbolic membership that is simply not in evidence. Chimpanzee interactions aren’t “interpersonal” ties in the human sense; they are biological association frequencies. In humans, a “tie” is a promise, a covenant, or a shared history. In chimps, it is a proximity metric. Using the same word for both is misleading.
The writers utilize terms like ‘civil war’ and ‘hostile group identity’. These are not biological categories; they are linguistic loans from the humanities used to provide a narrative weight that the behavioral data cannot sustain on its own.
What Actually Changed
- The Ngogo chimpanzees did not develop beliefs.
- They did not adopt ideologies.
- They did not form competing truth-claims.
Chimpanzee change was structural:
- Social ties narrowed
- Associations polarized
- Territory divided
- Reproduction separated
- Endemic in-group exclusivity was applied to (former) in-group members
Only after this did violence escalate.
The sequence is clear:
In group structure → group segregation → aggression
Not:
Belief → ideology → war
The Compression
Here is the key issue.
This study observes animal group-conflict.
Evolutionary framing then compresses three distinct claims into one:
- Chimps behave violently (observed)
- Humans behave violently (observational, but not at issue in this study)
- Therefore, human war is an evolutionary inheritance
But step (3) does not follow from (1) and (2) without a prior commitment to evolutionary continuity across deep time, and that commitment is not derived (or derivable) from this study.
It is brought to it.
This compression is not accidental. It follows from the governing assumptions of methodological naturalism. If human behavior must be explained as continuous with animal behavior across deep time, then observed similarities cannot remain merely descriptive. They must be interpreted as ancestral. The result is a collapse of analogy into identity. Resemblance is no longer allowed to remain resemblance, but is pressed into service as explanation.
The Compulsion to Closure
What we are seeing here is not simply a mistaken inference. It is a patterned intellectual move.
Once the data are in hand, they do not remain open. They are pressed toward a completed explanatory arc. Animal conflict becomes proto-human conflict; resemblance becomes ancestry; description becomes origin story.
This is what we’ve called the Compulsion to Closure.
The framework demands continuity. The narrative demands completion. And so the space between observation and explanation collapses.
Under this pressure, analogy cannot remain analogy. It must become identity. The chimpanzee cannot remain a chimpanzee; it must become an earlier version of ourselves.
The result is not a neutral reading of the data, but a closure imposed upon it.
Animals Are Not Proto-Humans
Chimpanzees kill. So do wolves. So do lions. But no one argues that wolf pack aggression explains geopolitics.
Why?
Because we recognize a categorical distinction. Human war involves:
- abstraction
- memory across generations
- symbolic identity
- moral justification
- strategic foresight
None of these are present here.
What this Study Actually Demonstrates
Ironically, the data cut against a common modern assumption about war that goes back (at least) to Jean-Jacques Rousseau – that mankind’s ills are a result of his departure from nature, his ideology and private property.
This is the view, often uncritically pervasive on the Left, that it is human higher function that corrupts us, not endemic sinfulness.
The study shows that conflict, even group conflict, does not require ideology. It can arise from shifting relationships alone. We can apply that insight broadly, but it must not collapse the distinction between human and animal behavior.
The Line That Must Be Kept
The Ngogo chimpanzees split, they polarized, and they killed former companions. From a human perspective, this may seem tragic.[2]
But to say it explains human war is to blur a line the data itself preserves.
Humans may descend to animal-like behavior.
But animals do not “ascend” to human war.
And unless that distinction is maintained, or is at least present as a critical foil challenging simplistic narrative glosses (Dr. Bergman on this here), interpretation will continue to pass itself off as observation.
Footnotes
[1] The researchers used mathematical tools (the Leiden algorithm and modularity metrics) to track how the group split. In simple terms, these formulas measure how often certain individuals stand near each other compared to the rest of the group. While this is an excellent way to map physical association, it is a purely statistical observation. It does not mean the chimpanzees have a mental or “patriotic” sense of belonging to a new group; it simply means they changed who they sat next to in the forest. To call this a shift in “identity” is to project a human psychological state onto a mathematical spreadsheet.
[2] Here, too, the narrative frays, as for the chimpanzees moral considerations don’t apply. They do what chimpanzees do – and that’s the end of it. The ethical realm belongs to God’s image-bearers.
John Wise received his PhD in philosophy from the University of CA, Irvine in 2004. His dissertation was titled Sartre’s Phenomenological Ontology and the German Idealist Tradition. His area of specialization is 19th to early 20th century continental philosophy.
He tells the story of his 25-year odyssey from atheism to Christianity in the book, Through the Looking Glass: The Imploding of an Atheist Professor’s Worldview (available on Amazon). Since his return to Christ, his research interests include developing a Christian (YEC) philosophy of science and the integration of all human knowledge with God’s word.
He has taught philosophy for the University of CA, Irvine, East Stroudsburg University of PA, Grand Canyon University, American Intercontinental University, and Ashford University. He currently teaches online for the University of Arizona, Global Campus, and is a member of the Heterodox Academy. He and his wife Jenny are known online as The Christian Atheist with a podcast of that name, in addition to a YouTube channel: John and Jenny Wise.