title: “CIv4+5 Hypothesis v2.1 – The Reality Signal” description: “Modular refinement introducing the Reality Signal (RS) within the CIv4+5 framework.” ————————————————————————————————–

📌 Note: This document extends the CIv4+5 Hypothesis v1.0 by formalizing the Reality Signal (RS) — a latent alignment measure between perception and simulation — as a core operational mechanism for structural break detection.

For the full CIv4+5 architecture and philosophical foundations, see CIv4+5 v1.0 – Foundations of Cybernetic Intelligence.

CIv4+5 Hypothesis v2.1: Reality Signal for Structural Break Detection

Background

Within the CIv4+5 framework, viable agents maintain intelligence through recursive coordination between perception, simulation, and model evolution. In v1.0, we proposed that a cyber-physical agent operates via a layered architecture of symbolic compression, motif induction, and coordination loops grounded in algorithmic information dynamics.

This v2.1 module focuses on a specific refinement: how the agent detects misalignment between its internal model and external environment, signaling a structural break or regime shift. The mechanism we introduce is the Reality Signal (RS).

Core Proposition

The Reality Signal (RS) is a latent variable that encodes the alignment between internally simulated states and externally observed data. It serves as the decision variable for structural coherence within the agent’s world model. When RS drops below a threshold, the agent classifies the situation as a structural break, triggering model evolution or control reconfiguration.

This module thus addresses a fundamental cybernetic problem: how does a system distinguish hallucination from grounded prediction?

RS Definition (Cyber-Physical Formulation)

For a system with internal simulation $\hat{x}_t$ and external observation $x_t$:

\[\text{RS}(t) = -\text{BDM}(x_t \oplus \hat{x}_t) + \lambda \cdot \text{BDM}(\hat{x}_t)\]
  • $x_t$: observed state at time $t$
  • $\hat{x}_t$: predicted or simulated state at time $t$
  • $\oplus$: symbolic difference or structural mismatch operator
  • $\text{BDM}(\cdot)$: Block Decomposition Method complexity
  • $\lambda$: complexity regularization coefficient

Thresholding and Adaptation

A dynamic thresholding mechanism maps RS to adaptive decisions:

  • High RS: reality-aligned — maintain mode
  • Low RS: potential break — initiate control transition or rule update
  • RS drops: log breakpoint and invoke re-coordination

This mirrors how the human brain’s frontal regions transform continuous perceptual signals into binary judgments about reality (Dijkstra et al., 2025).

Minimal Validation: Univariate Prototype

We validate this mechanism in a simplified testbed: a single univariate time series. In this setting:

  • RS is computed as the rolling divergence between observed and predicted values.
  • A breakpoint is declared when RS(t) falls below a learned or adaptive threshold.
  • This allows comparison against statistical methods (e.g., CUSUM, BOCPD) and grounding for rule evolution (e.g., AlphaEvolve).

Role Within the CIv4+5 Architecture

Within the full CIv4+5 system, RS serves as:

  • A control signal for Coordination Layer switching
  • A trigger for Structural Break Detector modules
  • A feedback variable in AlphaEvolve for rule refinement
  • An anomaly gate for Narrative Integrity checks in higher-level semantic models

The RS formalism is designed to generalize across scales: from binary motif streams to multidimensional economic indicators, from symbolic simulations to embodied telemetry.

Summary

CIv4+5 v2.1 introduces the Reality Signal as a modular refinement: a real-time measure of simulation-perception alignment that drives structural break detection. RS enables a viable system to monitor its own predictive realism and reconfigure in the face of divergence — an essential mechanism for cybernetic adaptation.

Key References:

#CyberneticTeammate #CIv4plus5 #RealitySignal #StructuralBreakDetection #ViableSystems