Smith restores the classical, perennial view that reality is not flat.
Modern science sees only the lowest stratum — the corporeal, measurable world — but classical metaphysics recognises three ontological levels:
Corporeal
Physical, measurable, extended in space‑time
Horizontal (mechanistic)
Psychic / Subtle
Qualitative, symbolic, formative
Vertical (formal)
Spiritual
Pure act, intellective, transcendent
Vertical (higher)
This tripartite cosmos is the backbone of Smith’s entire system.
Vertical causation is the metaphysical “missing piece” that allows science to be reintegrated into a full worldview.
Smith’s central scientific claim:
Quantum measurement cannot be explained by horizontal causation alone.
The collapse of the wavefunction — the transition from a cloud of possibilities to a single actual outcome — is:
Therefore, it requires vertical causation: an act from a higher ontological level that determines the actualisation of a physical state.
This is the scientific doorway back into metaphysics.
Smith argues that the cosmos is integral, meaning:
This restores:
The cosmos becomes intelligible again.
Human beings uniquely span all three levels:
Thus, the human person is the meeting point of horizontal and vertical causation.
This is why consciousness cannot be reduced to brain activity.
At the highest level:
This is the domain of:
Science becomes one mode of knowing among others — valid, but limited.
For your Many Mansions project, this system provides:
It aligns beautifully with your long‑term goal of restoring metaphysical clarity to Catholic catechesis.
For the Many Mansions project, this system provides:
It aligns beautifully with the long‑term goal of restoring metaphysical clarity to Catholic catechesis.
