The Four Crazy Options of Quantum Mechanics
Quantum mechanics is often described as the most successful scientific theory ever devised. Its predictions have been confirmed to astonishing precision, and modern technology depends on its correctness.
Yet despite that success, there remains deep disagreement about what the theory actually says about reality.
At the center of the dispute lies Bell’s theorem, one of the most celebrated results in twentieth-century physics. Very roughly, Bell showed that certain correlations predicted by quantum mechanics—and later confirmed experimentally—cannot be reproduced by any theory that simultaneously preserves a collection of intuitively attractive principles about how reality works.
Exactly which principles are at stake is a matter of debate. But the widespread view is that Bell’s theorem forces us to abandon at least one of several deeply cherished ideas: that influences cannot travel faster than light, that physical systems possess definite properties before they are measured, that experimenters are free to choose measurement settings independently of the systems they study, or that measurements have single outcomes occurring within a single shared reality.
This is why Bell’s theorem is so important. It is not merely a technical result about probabilities. It is widely regarded as a signpost pointing toward something profoundly strange about the nature of reality itself.
For many physicists, the lesson is that reality is simply weirder than common sense ever imagined.
I have long suspected a different possibility.
The four-way dilemma of quantum mechanics interpretations strikes me as a picture-perfect case of a reductio ad absurdum argument.
Sure, the argument leading to the dilemma is not a formal logical contradiction. Nobody derives “A and not-A.” But it is about as close to a contradiction as any non-logical contradiction can get. Follow the standard reasoning from Bell’s theorem and the experiments that confirmed it, and you are supposedly forced to abandon at least one of four things:
~ Locality (allowing influences to act instantaneously across space),
~ A single shared reality (giving us infinitely—or perhaps uncountably—many branching worlds),
~ Statistical independence between experimental settings and the hidden variables governing outcomes (requiring extraordinarily fine-tuned correlations stretching back to the earliest moments of the universe),
~ Or the idea that physical systems possess definite properties prior to measurement (suggesting that, before observation, there simply was no determinate fact of the matter).
Presented with such a menu, my reaction is not, “Which of these should I believe?” My reaction is, “Something has gone badly wrong.”
Because consider what is actually being proposed.
One option is that influences propagate instantaneously across space, despite relativity’s insistence that no such thing should occur.
Another is that every quantum event causes reality to branch into an incomprehensibly vast multiplicity of equally real worlds.
A third is that the universe began in a state so exquisitely fine-tuned that the hidden variables governing particles and the future choices of experimenters were correlated from the start in exactly the right way to produce the observed violations of Bell inequalities.
And the fourth is that physical properties do not possess definite values until measured—that there literally was no fact of the matter about what would be observed prior to the act of observation.
These are not mildly counterintuitive conclusions. They are not merely “surprising.”
They are batshit crazy conclusions.
All four.
That, to me, is the central fact.
Yet for nearly a century, some of the smartest people in the world have calmly accepted one or another of these options. Entire schools of thought have formed around each. Many-Worlds embraces the branching of reality. Bohmian mechanics embraces nonlocality. Superdeterminism embraces the abandonment of statistical independence. Copenhagen-style interpretations embrace the absence of determinate properties prior to measurement.
And these are not fringe internet theories. They are defended by serious physicists at major institutions.
What astonishes me is not that such theories exist. What astonishes me is how little weight the community seems to place on the fact that all four horns are so spectacularly bizarre.
If an argument leaves you choosing between faster-than-light influence, innumerable parallel realities, universe-spanning fine-tuned correlations, and the absence of determinate physical facts prior to observation, perhaps the most important datum is not the argument’s conclusion.
Perhaps the most important datum is that the conclusion looks indistinguishable from a reductio.
There is, however, another possibility worth considering—one that is more sociological than mathematical.
Human communities often develop strange beliefs, rituals, and slogans that function as markers of membership. The very weirdness of the signal can be part of its purpose. If a claim is obvious, anyone can repeat it. But if a claim is strange, costly, or absurd-sounding, then publicly accepting it demonstrates allegiance to the group. Narratives then evolve around the signal after the fact, explaining why the strange belief is not merely tolerable, but profound, courageous, enlightened, or necessary.
One cannot help noticing that quantum foundations exhibits something of this structure.
Each horn of the quadlemma has its own intellectual community, its own heroes, its own vocabulary, and its own preferred absurdity.
Copenhagen-style indeterminacy is often presented not merely as a hypothesis, but as intellectual maturity—the willingness to abandon naive realism.
Many-Worlds is often framed as the courage to take the mathematics seriously wherever it leads.
Bohmian mechanics is frequently associated with the refusal to surrender an objective reality.
Superdeterminism is presented as the willingness to question assumptions that everyone else takes for granted.
In each case, the absurdity becomes not merely a cost, but almost a credential.
This is a familiar human pattern. Once a community forms around an implausible commitment, the implausibility itself can become part of the community’s identity. Outsiders recoil; insiders reinterpret that recoil as evidence that outsiders are naive, shallow, or insufficiently sophisticated. The belief becomes a shibboleth. The more bizarre it sounds to common sense, the more effectively it distinguishes those who “get it” from those who do not.
If that dynamic took hold in quantum foundations, then the reaction to Bell’s theorem may have become sociologically inverted.
The bizarre conclusions should have intensified skepticism toward the framing.
Instead, their bizarreness may have helped crystallize interpretive tribes.
Each tribe selected one absurdity, developed a metaphysical narrative around it, and gradually treated acceptance of that narrative as a sign of seriousness.
On this view, the problem is not that physicists are unintelligent.
Quite the opposite.
The smarter the community, the more elaborate and compelling the post hoc justifications can become. Very intelligent people are not immune to groupthink. They are often better at rationalizing it.
Perhaps, then, the most remarkable thing about the quantum quadlemma is not merely that it contains four crazy options.
It is that those crazy options became stable intellectual identities.
That should worry us.
Because once an absurdity becomes a badge of sophistication, the normal immune system of inquiry is compromised. The community no longer asks, “How did we end up with such an impossible menu?”
It begins asking instead, “Which impossible option proves that I am the kind of thinker who can handle the truth?”
And at that point, a scientific problem has acquired the structure of a sociopolitical one.
The situation reminds me of early twentieth-century intuitionism in ethics. One of its guiding ideas was simple: if your brilliantly logical ethical theory leads to the conclusion that torturing kittens is occasionally permissible, then perhaps the problem is not with your intuition that torturing kittens is wrong. Perhaps the problem is with your theory.
The point was not that intuitions are infallible. They aren’t. The point was humility about the reliability of long chains of abstract reasoning. Human beings are notoriously prone to fallacies, hidden assumptions, and elegant mistakes. If a theory ends in a conclusion that violently conflicts with our deepest and most reliable judgments, that is evidence against the theory, not merely against the judgment.
Physics, however, often seems to have adopted the opposite attitude. When an argument leads to action at a distance, countless parallel realities, extraordinarily precise correlations between the state of the universe and future experimental settings, or the claim that physical properties lack determinate values until measured, the response is frequently not, “Let’s scrutinize the argument.”
The response is, “Well, I suppose reality is just that weird.”
That strikes me as backwards.
Of course, physicists have a defense. Quantum mechanics works. It works spectacularly. It predicts experimental outcomes with astonishing precision. The mathematics is not in doubt.
But the success of the formalism does not imply the correctness of every metaphysical conclusion people draw from it. A formalism can be correct while our interpretation of what it means remains profoundly mistaken.
Indeed, my concern is not really that Bell’s theorem itself contains a mathematical error. The theorem may be perfectly correct.
The more interesting possibility is that we misunderstand what assumptions the theorem is actually forcing us to abandon.
The reductio is not Bell’s mathematics.
The reductio is the collection of metaphysical conclusions that generations of physicists have come to regard as the only available responses to that mathematics.
That is why papers such as Paul Raymond-Robichaud’s attract my attention. I have no idea whether his specific proposal—which attempts to show the compatibility of local realism with no-signaling theories, including standard quantum mechanics—is correct. To become a competent judge of that would require years of dedicated study.
But I find it difficult to believe that the community’s current situation is the final answer.
When a line of reasoning appears to force us into a four-way dilemma whose options are all wildly implausible, the most natural conclusion is not that one of those absurdities must be true. The most natural conclusion is that some assumption buried within the framing deserves reexamination.
Perhaps locality is not the thing that must go.
Perhaps realism is not the thing that must go.
Perhaps statistical independence is not the thing that must go.
Perhaps single-outcome reality is not the thing that must go.
Perhaps the entire framing of the problem is wrong.
Perhaps future generations will discover not an error in Bell’s proof, but an error in what we thought Bell had proven.
What strikes me as remarkable is not that alternative proposals continue to appear. What strikes me as remarkable is that Bell’s theorem has not been more widely regarded as a giant flashing warning sign.
Physics has spent nearly a century staring at one of the most powerful reductio-style arguments ever produced. Yet instead of treating the absurdity of the conclusions as evidence that something fundamental may have been misunderstood, much of the field has simply chosen its preferred absurdity and moved on.
Maybe one of those absurdities is ultimately true. Reality is under no obligation to conform to human intuition.
But if an argument appears to force us into a choice among four batshit crazy conclusions, humility suggests a different response before embracing any of them.
It suggests looking harder at the assumptions, the framing, and the inferential steps that led us there.
It suggests looking for the hidden assumption.
The subtle equivocation.
The unnoticed premise.
The place where a seemingly airtight argument quietly went off the rails.
Because history is full of arguments that appeared unassailable until someone noticed the assumption everyone else had stopped seeing.
If I were forced to bet, I would wager that future generations will look back on this quantum quadlemma much as we now look back on other intellectual dead ends: as evidence not that reality was impossible to understand, but that a hidden assumption had quietly smuggled itself into the argument and gone unquestioned for far too long.
Said another way…
Bell’s theorem is probably mathematically correct and experimentally supported.
However, the standard interpretive options each incur enormous ontological costs.
Because these costs seem disproportionately large compared with the assumptions generating them, it is rational to assign substantial probability that a deeper reformulation of the conceptual framework remains undiscovered.
This judgment derives not from dislike of the conclusions but from a long-standing scientific heuristic:
➡️ When every available interpretation appears radically more complex than the phenomena themselves, one should suspect that the problem has not yet been posed in its most natural form.
What makes Bell’s Theorem uniquely unsettling is that its famous “horns” are not absurd in the usual scientific sense. They do not predict anything obviously impossible. They do not imply infinite energies, collapsing atoms, or a Sun-bright night sky. On the contrary, they are all carefully formulated so as to remain perfectly compatible with every observation we have ever made.
That is precisely what bothers me.
Nonlocality is not proposed as a crude faster-than-light signaling mechanism that we could exploit tomorrow. It is formulated in a way that somehow preserves the observed impossibility of sending usable information faster than light. Many-Worlds does not predict visible parallel universes constantly intruding into ours. The other worlds are arranged to remain inaccessible. Superdeterminism does not produce obvious conspiracies that we can uncover experimentally. The hidden correlations are buried in the initial conditions of the universe itself. Anti-realist interpretations do not generate contradictory observations. They simply deny that there was ever a definite fact of the matter prior to measurement.
Each horn is therefore protected from empirical refutation by construction.
In that respect, they possess an unusual similarity to theological explanations. The comparison is not that they are religious, nor that they are necessarily wrong. Rather, they share a structural feature often found in sophisticated conceptions of God. A God who visibly rearranged planets every Tuesday would be easy to test. But a God defined so that His actions are always compatible with whatever we observe becomes much harder to distinguish from alternative explanations. The theory survives because it has been crafted to remain observationally consistent.
Something similar can be said about Bell’s horns. Their appeal does not come from generating bold new successful predictions. Nor do they derive their plausibility from independent explanatory triumphs elsewhere in science. Rather, they are accepted because Bell’s argument appears to leave no other options. Their primary credential is not that they seem naturally true, but that they occupy the remaining logical territory after other possibilities have been excluded.
That creates a peculiar epistemic situation. We are not being asked to accept a strange conclusion because it elegantly explains a vast range of phenomena. We are being asked to accept enormous hidden ontological machinery because a theorem seems to corner us into doing so. Countless invisible worlds. Hidden universal correlations. Nonlocal influences. The absence of definite pre-measurement facts. All are, in a sense, metaphysically insulated. They are allowed to be as large and exotic as necessary, provided they leave the observable world unchanged.
Historically, this is not how the greatest advances in physics have usually felt. Newton reduced celestial and terrestrial motion to a single law. Maxwell unified electricity, magnetism, and light. Einstein simplified disparate phenomena into a coherent spacetime framework. The conceptual changes were profound, but they purchased explanatory elegance. Bell’s horns often feel different. They can seem less like unifications and more like emergency ontologies—vast hidden structures introduced not because they illuminate reality more deeply, but because they rescue consistency after a contradiction has been derived.
Perhaps reality truly is that way. Nature is under no obligation to satisfy our aesthetic preferences. But history also suggests another possibility: when every surviving explanation feels strangely engineered to remain empirically acceptable while carrying extraordinary hidden ontological baggage, it may be a sign that the deepest assumptions have not yet been brought fully into view.