Jos De Roo

The Library and the Path

This exploration weaves together three key ideas. The first, drawn from the cosmology of Thomas Hertog and Stephen Hawking, suggests that the universe did not begin with a single, sharp first moment or fixed rules. Instead, it emerged from a quantum haze of possibilities, and as it unfolded, certain patterns stabilized into the effective laws we observe today. A second idea comes from Gödel’s incompleteness theorems, which frame mathematics as an inexhaustible landscape of truth, a realm so vast that no finite set of axioms can ever capture it all. The third idea, from Werner Heisenberg’s account of reality’s layered order, holds that different domains of the world—like microphysics, life, and culture—possess their own lawful connections and require their own appropriate languages. What we can say or measure ultimately depends on the context that makes those phenomena legible.

A central metaphor helps connect these concepts. Imagine a timeless Library containing every consistent mathematical blueprint for a universe, holding all possible geometries, interaction rules, and even complete cosmic histories. This Library is static, but it has different floors, representing regions of description with distinct grammars, such as quantum, thermodynamic, biological, or cognitive. Now, imagine a single Path being traced through its stacks. That Path is our world. Early on, this Path winds through foggy regions where countless alternatives overlap. Later, it enters chapters where stable, law-like behavior dominates—where gravity holds, atoms persist, and chemistry works. Our present data acts like clues at the end of a mystery, allowing a top-down filtering of possibilities, while our choice of instruments and questions selects which descriptions apply on which floor.

Observers are not external to this story; they are the very mechanism by which a branch of the Library becomes legible. This is the “worm’s‑eye tube” perspective, where origin, evolution, and observership are inextricably linked. We can visualize this process as a ladder. At the base, quantum systems begin as structured possibilities. Through interaction with their surroundings, delicate superpositions dissolve, and robust, copyable patterns survive; measurement isn’t a passive read-out but the context that turns possibilities into records. On the next rung, context determines what counts as a fact, as some experimental descriptions exclude others not by contradiction but by mutual limitation; each chart is adequate on its floor and for its specific questions. Higher up, life evolves to read those persistent records, as senses compress data into actionable cues and brains build models to predict. At the top, science and mathematics amplify this feedback loop, extending our senses with instruments and stabilizing facts across observers using symbolic language.

Gödel’s theorems provide a gentle horizon to our confidence. If mathematical truth will always outrun any fixed list of axioms, we should not expect a final, compact “theory of everything” that explains every fact once and for all. Instead, we should expect exactly what we have found: excellent, domain-true laws—theories good enough to land probes on comets—that nonetheless bend, break, or generalize at their extremes. Heisenberg’s lesson instructs us not to demand a single, all-purpose language, but to expect a layered plurality of adequate descriptions. Hertog’s lesson suggests that the very relevance of those descriptions is history-bound, emerging only as the Path leaves the initial quantum fog and crystallizes stable patterns.

Time, therefore, belongs to the Path, where memories accrue, entropy grows, and causes precede effects. The Library, however, is timeless; its structures simply are. Both views are true because they describe different levels: the journey and the map. Mathematics bridges these two perspectives. As a territory, it is an inexhaustible structure; as a practice, it is the evolving craft by which observers extract stable order from that structure and test whether yesterday’s models will still guide them tomorrow.