Why the speed of light is not an absolute limit

The core claim is that the speed of light is not a fundamental, unbreakable barrier—both because faster-than-light signaling does not automatically create time-travel paradoxes, and because quantum “non-locality” is often misunderstood. If quantum mechanics is only an effective, statistical description of deeper deterministic physics, then faster-than-light communication could become possible without violating locality in the usual sense.

On the relativity side, the argument starts with the geometry of spacetime. In Einstein’s framework, the speed of light defines “light cones”: a forward light cone containing events reachable by signals and a backward light cone containing events that can send signals to a given event. As long as signals stay within these cones, causal order remains consistent across observers moving at different velocities, because the light cones themselves are invariant when the speed of light is the same for everyone.

The worry about causality typically arises when something travels outside the light cone, since then different observers can disagree about whether the effect is “in the future” or “in the past.” The response here is that causality violations require the ability to treat time as directionless. But time does have a direction in practice, which corresponds to a “preferred slicing” of spacetime—an underlying choice of which direction counts as forward. With such a preferred slicing, even faster-than-light signals would only be allowed in the forward direction, preventing closed causal loops. The claim is that preferred slicings already appear in mainstream models, often tied to the cosmic microwave background, so the existence of a preferred time direction need not contradict relativity.

The second half targets quantum physics. Quantum entanglement is frequently described as “spooky action at a distance,” but the argument distinguishes between two ideas: (1) interaction and (2) knowledge. When entangled particles are measured, the measurement on one side lets an observer infer a correlated property on the other side. That inference can look instantaneous, but it does not involve controllable information transfer; quantum mechanics gives probabilities for outcomes, and the local measurement does not change those probabilities in a way that would let someone encode a message.

Where the speed-of-light constraint is said to enter is in the interpretation of wavefunction collapse. Collapse is mathematically instantaneous, but there is “no shred of evidence” that it is a physical process. If instead particles already carry definite properties (hidden variables), then quantum predictions would be statistical averages over unknown initial conditions. The argument then pivots to superdeterminism: a framework intended to keep hidden-variable explanations compatible with observed quantum correlations while remaining local. In that view, the apparent collapse is not fundamental, and deviations from standard quantum statistics could allow faster-than-light signaling.

Finally, the claim becomes strategic: physicists may keep building quantum technologies, encounter anomalies, and—using AI-driven pattern finding—arrive at hidden-variable explanations that permit faster-than-light communication. The broader warning is that treating the speed of light limit as sacred can become circular: assume the limit holds, conclude quantum physics is fundamental, then assume the limit persists into quantum gravity, even if quantum physics is not truly fundamental.