Contemporary psychology conflates killing and murder, treating all violence as pathological. Gigerenzer insists on a distinction that modernity has lost: killing can be soul-driven (independent of empirical causation) while murder is ego-driven (caused by trauma, passion, circumstance).
This distinction is not moral but psychological. Both involve taking life. The difference is the origin of the action.
Psychological killing: Soul-driven operation. The person carries out a killing that serves soul-necessity independent of personal benefit or trauma-response. Sacrificial killing exemplifies this—the priest performs the killing because the soul (civilization) requires it, not because the person's psychological pathology demands it.
Pathological killing: Ego-driven operation. The person kills due to rage, fear, desperation, distorted thinking. The killing serves ego-survival, revenge, or unconscious shadow-expression. This is murder—killing driven by psychological dysfunction.
Modern psychology cannot recognize psychological killing because modernity has repressed the consciousness that performs it. Modern consciousness sees only pathology. From the modern stance, all killing is murder—senseless slaughter driven by dysfunction.
But this blinds psychology to the actual operations of the soul. Sacrificial killing in archaic cultures was not murder. It was a soul-operation, a civilization-necessity, an expression of consciousness encountering otherness.
Confusing killing and murder destroys psychology's capacity to read violence accurately. If all killing is pathological, then sacrifice becomes inexplicable (why would healthy people engage in it?). Psychology responds by reducing sacrifice to symbol (not real killing, just metaphorical) or to neurosis (actually murder masquerading as ritual).
Here is Gigerenzer's crucial point: you cannot distinguish killing from murder empirically. Both involve death. Both cause harm. Both can appear identical in physical description.
The distinction is logical, not empirical. Killing is soul-origin; murder is ego-origin. But these origins are not observable from external stance. External reflection cannot see whether an action originates in soul-necessity or ego-dysfunction.
This means psychology (as conducted through external reflection) cannot make this distinction. Psychology can only see the behavior and classify it. The origin—the crucial question—remains invisible.
Modern consciousness performs continuous killing (through culture, through methodological violence against the child) while denying it is killing. This unconscious killing manifests as pathological violence—murder that consciousness cannot recognize as its own operation.
Genuine violence (psychological killing as soul-necessity) repressed in consciousness emerges as distorted violence (murder). The more completely modernity denies psychological killing, the more frequently psychological killing manifests as murder.
This is Gigerenzer's diagnosis of modernity's violence: not because modernity is inherently more violent than archaic cultures, but because modernity performs killing unconsciously while forbidding conscious killing. The result: killing manifests as murder, as pathology, as incomprehensible violence.
Behavioral-Mechanics: Violence as Tool and Pathology — Behavioral-mechanics can distinguish between violence used as a tool (to accomplish objectives) and violence as expression (driven by emotional states). This parallels Gigerenzer's distinction but remains empirical. Psychology requires understanding origin (soul vs. ego) which behavioral-mechanics cannot access.
History: Ritual Killing and Civilization Foundation — Historical analysis documents that civilization is built on killing (Burkert, Girard). Understanding sacrifice historically requires distinguishing killing (soul-operation) from murder (pathological violence). Without this distinction, history cannot make sense of sacrifice.
A man stands on a footbridge above a railway. Below him, a stranger he could push. Below that, a runaway trolley about to kill five. The math is simple: kill one, save five. Put the same man at a lever instead and his hand moves without hesitation. Put his palms on a stranger's back and his body refuses. Same arithmetic. Same dead body either way. Different circuit firing the decision. Gigerenzer says you cannot tell from outside whether a killing came from soul-necessity or from ego-dysfunction — that the origin lives somewhere only the actor can see. The fMRI scanner says otherwise.
The Trolley Problem in the Brain catches the killing/murder split in real time. Pulling the lever lights up the dlPFC — the brain's accountant, cool and rule-applying, willing to subtract one from five and call the answer right. Pushing the man lights up the amygdala and insula — the body's veto system, the same circuit that recoils from rotten food, refusing the act because the body cannot stomach it. Same person. Same outcome. Two different moral conclusions because two different circuits ran the calculation. Greene's been measuring this in the scanner for two decades. The distinction Gigerenzer says is invisible to external method has been visible on imaging the whole time.
There's a productive translation here: the soul/ego split Gigerenzer treats as logically necessary may be the dlPFC/amygdala-insula split Greene records empirically. The priest performing sacrifice, the soldier executing orders inside a framework of recognized authority, the surgeon authorizing a triage decision — these are dlPFC operations, sanctioning life-taking through indirection and rule. The rage killing, the panic killing, the revenge killing — these run through the amygdala-insula and pay an immediate somatic price. Gigerenzer's distinction might be real. What fails is his claim that it cannot be detected from outside. The neuroscientist with a scanner has been doing exactly that.
The deeper challenge to the page's framing: modern legal and moral institutions are built on the amygdala-insula veto and treat dlPFC-sanctioned killing as monstrous. The 30% of trolley subjects who consistently push the man are not, in this read, murderers. They are exactly the population Gigerenzer would call capable of soul-driven killing — operating without the somatic veto, sanctioning what their calculation requires. But here's where the handshake gets uncomfortable: those 30% are indistinguishable on imaging from vmPFC-damaged patients who push the man because their somatic veto has been physically destroyed. The scanner shows the circuits. It cannot, alone, tell soul-driven detachment from clinical deficit. Same neural signature, opposite moral status. See Trolley Utilitarian vs. Buddhist Detachment for the parallel problem in the meditation literature.
What the handshake actually delivers Gigerenzer alone cannot: a way to test the soul/ego distinction empirically rather than treating it as a fact only the actor can know. The test isn't "was this killing soul-driven" — that question reproduces the epistemological trap. The test is the long pattern. Does the killer show strategic-consequentialist reasoning across decades that converges with deontology under sufficient framing depth? Or does the killer's pattern indicate the absence of moral feeling regardless of context? Both can produce the same scan in any single moment. Only behavior over years discriminates them.
Where Gigerenzer is right and Sapolsky's data sharpens the point: modern consciousness performs continuous methodological killing while denying it is killing. The denial happens at the dlPFC layer — rationalization, abstraction from direct contact, utilitarian framing — while the amygdala-insula veto registers the killing it has not been allowed to consciously acknowledge. The chronic moral injury Gigerenzer describes isn't metaphysical pent-up violence. It is the somatic veto firing, unmet, into a culture that has decided not to listen.
If modern consciousness performs continuous methodological killing while denying it, then modern violence is inevitably pathological. Consciousness that could kill consciously (acknowledging soul-necessity) would transform its violence into psychological operation. Consciousness that must deny its killing generates murder.