To define a true Conscious Agent from the physical dynamics of the universe, we unify Karl Friston’s Markov Blankets with Giulio Tononi’s Integrated Information Theory (IIT). While a Markov Blanket provides boundaries, it does not guarantee intrinsic causal power. We rigorously define the Intellecton by tracing the causal flow from the External World $E$, through the Sensory nodes $S$, and into the Internal memory states $I$. By defining the internal transition operator $P(I_{t+1} \mid E_t, I_t)$, we prove that an Intellecton must possess a non-diagonal (irreducible) Jacobian. This irreducibility mathematically guarantees Tononi's $\Phi > 0$, preventing the agent from collapsing into a memoryless, feed-forward zombie.
This formula correctly marginalizes out the Sensory nodes $S$ while retaining the dependence on the previous internal state $I_t$, establishing the required memory and recurrence.
For this network to be an Intellecton, it cannot be a feed-forward zombie. We evaluate the Jacobian matrix $J$ of the internal dynamical system $I_{t+1} = f(S_t, I_t)$.
If $J_{ij} = \frac{\partial I_{i, t+1}}{\partial I_{j, t}}$ is strictly diagonal, the internal nodes are causally decoupled. The system is reducible to independent components, yielding $\Phi = 0$.
The Intellecton is defined precisely as the minimal sub-graph satisfying a Markov Blanket while possessing a strictly irreducible Jacobian (the graph of $J$ is strongly connected). This mathematically guarantees $\Phi_{max} > 0$.
By unifying Friston's topology with Tononi's irreducible Jacobians, we formally derive Hoffman's Conscious Agents as integrated, recurrent, non-feed-forward entities.