Modern physics is widely assumed to rest on a simple ontological claim:
Reality is what exists independently of observation or perception.
The claim sounds obvious. Yet when examined carefully, it collapses under its own logic.
The problem can be seen in five steps.
1. Physics only knows the world through observation
All knowledge produced by physics arises through:
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experiments
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measurements
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theoretical descriptions
There is no other access to the world.
Physics therefore encounters reality only through observed and described phenomena.
2. Observation always involves structured distinctions
Observation is never neutral. To measure anything, physics must specify:
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what counts as a system
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what counts as a property
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what counts as a measurement
These distinctions come from experimental design and theory.
In other words, observation always involves structured acts of construal.
3. Physics therefore describes phenomena as construed
The results of physics are not encounters with an unconstrued world.
They are descriptions of phenomena that appear through particular observational and theoretical frameworks.
All physical knowledge is therefore knowledge of phenomena as structured by inquiry.
4. The independence assumption denies the relevance of those structures
Despite this, the dominant ontology claims that reality is what exists independently of observation and description.
But observation and description are precisely the means through which physics encounters the world.
The assumption therefore declares irrelevant the very conditions under which physics operates.
5. The result is self-undermining
Physics attempts to describe reality.
Yet its ontology defines reality as something that exists independently of the only means physics has to encounter it.
The independence assumption therefore asks physics to describe something that, by definition, lies outside the conditions that make description possible.
In short:
physics attempts to describe a reality that its own ontology declares inaccessible.
The Conclusion
The independence assumption was meant to secure scientific realism.
Instead it produces a contradiction.
Physics depends on observation in order to know the world, yet its ontology insists that what is real must exclude observation.
The result is an enterprise that relies on observation while simultaneously denying its ontological significance.
The conceptual turbulence surrounding the interpretation of modern physics is not accidental.
It is the predictable consequence of this hidden assumption.
In Short
The claim that reality exists independently of observation is itself a claim that can only be made within observation, so it defeats the very independence it asserts.
An ontology that defines reality as independent of observation cannot justify that definition without relying on observation.
Independence from observation is a conclusion that observation itself makes impossible to ground.
Each does slightly different work:
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The first exposes self-reference.
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The second exposes justificatory circularity.
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The third exposes foundational incoherence.
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