Blog

The Real Role of the Human in the Loop

A closed system cannot validate itself — it needs a reference from outside.

The Structural Limitation of Intrinsic Self-Correction

The relationship between self-correction and probabilistic reasoning was clarified as early as 2024, when research on large language models (LLMs) showed that a system cannot reliably identify and correct its own reasoning errors without an external source of validation.

More recent research confirms the same conclusion and points to a major shift in direction: today's autonomous systems ground any verification exclusively in an external signal — running code in an isolated environment (sandbox), querying a database (RAG), validation through a formal solver, or a deterministic detector. Studies betting on "intrinsic self-correction" have become extremely rare.

As long as a system operates entirely within its own probabilistic space, the absence of a deterministic reference point makes it impossible to provide verifiable guarantees.

The Infinite Regress Problem in Decision Evaluation

The idea that an autonomous system can evaluate its own decision before acting on it runs into a classic problem: infinite regress. To evaluate an action, the system must simulate its consequences. Yet the simulation itself is a probabilistic operation that in turn requires an evaluation filter: by what criteria, with what resource budget, and to what depth? The regress cannot stop from inside the system. It must be interrupted exogenously, through a deterministic limit imposed from outside.

Probabilistic process 1 Probabilistic process 2 infinite regress…
Stopping point Deterministic threshold / external signal

Therefore, architectures built on the premise that "the agent validates its own decisions" don't solve the validity problem. They merely shift the error up a level, stacking a second probabilistic process on top of the first, without either one being anchored to an external reference.

The Asymmetry Between Closed Systems and the Human Operator

The fundamental difference between human cognition and an artificial intelligence system doesn't lie in the error rate, but in the open-ended character of human intelligence.

When a person makes an incorrect decision, the external environment quickly provides corrective feedback: a reaction from the team, an empirical result that doesn't match expectations, or an operational mismatch. Correction happens through direct interaction with the environment, not through isolated internal recalculation. The correction loop works precisely because it doesn't depend solely on the individual's ability to evaluate their own reasoning, but on their permanent connection to a reality independent of them. What's more, there's an additional dimension to human decision-making that's missing from today's software architectures: the nature of the evaluation signal.

This asymmetry can have consequences for an SME that treats Human-in-the-Loop as a simple compliance checkbox — one that will discover, at the first costly mistake, that it never actually had real control.

Informational Homogenization versus the Heterogeneous Signal

In the way AI systems are built, the "external signal" is treated as just another data stream: a test run, an error code, or a database query. All of these inputs end up being processed by the same probabilistic mechanism.

The human cognitive system operates through dual evaluation mechanisms. External information is processed through analytical reasoning, but it is also checked against internal states that don't come from the same information stream:

  • Implicit experience (tacit knowledge) that isn't formally articulated;
  • The instinct to sense a risk or an inconsistency before formulating an explicit hypothesis;
  • Evaluating context against values and constraints that aren't part of the logical process itself.

A formally coherent chain of reasoning cannot invalidate itself purely through its own logical structure. A state outside that reasoning, however, can.

This is where the structural limit of current LLM architectures lies: for an AI agent, any input data becomes homogeneous. A test result, a piece of context pulled from a document, or a signal from a sensor are all processed through the same probability distribution, because the system has no processing pathway that stays independent once the data has entered the model.

We could say the system doesn't gain an analytical counterpoint — only a larger volume of data.

Implications for Technology Governance and IT Architecture

This analysis isn't an argument against adopting autonomous agents in business — it's a call for a rigorous redefinition of Human-in-the-Loop (HITL). At today's pace, the human operator's role shouldn't be reduced to simple sequential checking (micro-checking), because in linear, repetitive analysis tasks, an automated system is undeniably faster and more consistent. Reducing human involvement to a simple formal confirmation step encourages automation bias (uncritical trust in the automated decision), which cancels out the value of the control itself.

Inefficient — sequential checking
Step 1 Confirmation Step 2 Confirmation Result

Elevated risk: automation bias — the human confirms mechanically, without truly evaluating each step anymore.

Optimized — control at the premise level
Aggregated AI execution (Step 1…N) Human validation of the premise Finalization

Advantage: the human intervenes where it matters — at the premise, with an unconditional right to veto — not at every mechanical step.

The human operator is necessary in the architecture because they are the only source of a signal of a different nature. They are the only element capable of spotting a substantive mismatch where the form of the reasoning is perfectly coherent.

Design principles for AI governance:

  • Placing control points at the level of premises: human intervention must be positioned at the moments when a decision becomes a working assumption for downstream processes, not at the end of the execution chain.
  • The right to unconditional veto: governance mechanisms must allow an autonomous process to be stopped without immediately requiring a formal justification. Having to analytically argue a doubt before being allowed to intervene cancels out exactly the intuitive signal we were trying to protect.
  • Deterministic restriction of reflection processes: the execution loops of AI agents must be limited by rigid, extrinsic parameters (compute budget, maximum number of iterations, time limits). A closed system cannot decide on its own when to stop its own search.

Debates about AI autonomy have focused mainly on expanding the executive capabilities of these systems. A strategically mature approach, however, requires identifying their fundamental limits.

A closed system cannot self-correct because it lacks a real external reference — that is, a direct relationship with an environment outside the system.

As long as this anchoring function remains the responsibility of the human, technology governance keeps its foundation. The moment validation is delegated entirely to another probabilistic process (agentic systems), that anchor point disappears, leaving behind only formal coherence — which was never a guarantee of truth.

← Back to Blog