Explanatory Strain in the Particle–Wave–Particle Dance

“According to the CI…an electron is emitted from a source…It immediately dissolves into a ‘probability wave’…the wave ‘collapses’ and turns back into a particle…both states are somehow included in the wave function…the state of the entity settles into at the point of detection…Werner Heisenberg said ‘the transition from the "possible" to the "actual" takes place during the act of observation’.”

— Gribbin, Six Impossible Things, pp. 34–35

The Copenhagen Interpretation (CI), as presented here, stages the electron in a three-act sequence:

1. Particle at the source — the electron is emitted from the electron gun.

2. Wave in transit — the electron spreads as a probability wave, interfering with itself.

3. Particle at the detector — the wave collapses, producing a single outcome according to probability.

At first glance, this seems clear. But look closely: the sequence smuggles in explanatory assumptions under the guise of narrative clarity:

• The particle “dissolves” into a wave.

• The wave “carries” multiple possibilities.

• Collapse is a quasi-causal event triggered by detection.

Superposition as conceptual tension

Superposition is introduced in a single breath: both states are “somehow included” in the wave function. No mechanism is offered, leaving a vague ontological picture: the electron is neither here nor there, yet somehow both, until detection. This is a textbook case of explanatory strain — metaphor is used to fill a conceptual gap, but the metaphor itself produces tension.

Heisenberg’s quotation adds historical authority, yet it reinforces the same narrative: the “transition from possible to actual” depends on observation, keeping the mystery alive.

Where the strain is most visible

The CI narrative does not explain what happens between emission and detection. Instead, it:

• Introduces the wave function as if it were a tangible entity,

• Claims collapse as a process, but provides no mechanism,

• Appeals to observation to finalise outcomes.

The resulting story is phenomenologically plausible but conceptually inconsistent if interpreted literally. The electron does not “travel” as a wave in the classical sense; the wave function represents a structured potential, and collapse is the perspectival instantiation of one possible outcome.

The reader’s punchline

Gribbin hints that the CI may appear “laughable” to the reader. This is instructive: the particle–wave–particle sequence is a narrative prop, satisfying classical intuition while generating internal strain. Superposition and collapse are devices that smuggle relational structure into a classical story, not explanations of physical mechanisms.

The relational perspective

From a relational ontology:

• The wave function is a theory of potential, not a medium.

• No particle “travels” in a classical sense; instantiation occurs when a perspectival cut is made.

• Superposition is the coexistence of multiple admissible cuts, not a duality of being.

• Collapse is the selection of one actualisation, not a physical process.

Seen in this light, the CI narrative dissolves into intelligible structure, without paradox, without particles knowing, and without waves performing theatre.