Why this matters
Do you have free will? Most people experience life as if the answer is yes. We do not merely observe choices; we live from within them. The future feels unfinished, and the present feels like the place where reality is still being made.
Yet one of the most common philosophical readings of modern physics points in the opposite direction. If there is no universal “now,” then past, present, and future may all be equally real. That view is often called the block universe: time does not truly pass, the future is already there, and our sense of an open world is only a feature of how consciousness moves through a fixed structure.
Many physicists are comfortable separating the mathematical success of relativity from its philosophical interpretation. I am not interested in doing that too quickly. If a theory seems to erase the reality of the present, the openness of the future, and the lived experience of agency, then the interpretation deserves closer scrutiny.
The chain of reasoning
The usual path to the block universe begins with Special Relativity. In Einstein’s framework, observers in relative motion do not agree on which distant events are simultaneous. If simultaneity is relative, then there is no single universal present shared across the cosmos.
From there, a philosophical step is often taken: if there is no objective global present, then all times may be equally real. The present becomes perspectival rather than fundamental. That is the basic route from relativity to the block universe.
The chain can be summarized like this:
That chain is elegant. But one part of it deserves more attention than it usually gets.
The overlooked assumption
When physicists measure the speed of light directly, what experiments determine with extraordinary precision is the round-trip speed of light: light goes out, returns, and the total travel time is measured.
The one-way speed of light is harder. To measure light going from point A to point B only once, you need synchronized clocks at both locations. But synchronizing distant clocks already requires a convention about signal travel time, and in practice that convention is tied to light itself.
This is not fringe or hidden. It is a well-known issue in the foundations of relativity. Einstein’s synchronization rule treats light as isotropic, meaning it travels at the same speed in every direction, and that convention yields the standard formulation of Special Relativity.
The crucial point is not that Special Relativity fails experimentally; it does not. The point is that more than one interpretation can fit the same successful mathematics and the same observed results.
A different interpretation
This is where Neo-Lorentzian theory enters. It accepts the tested empirical predictions of Special Relativity — time dilation, length contraction, and the standard observed outcomes of relativistic experiments — but interprets them differently.
Instead of treating all inertial frames as equally fundamental in ontology, Neo-Lorentzian theory proposes that there is a real, though not directly obvious, preferred frame or causal rest frame. Motion relative to that frame produces the same observable relativistic effects, so the mathematics used in practice can remain unchanged.
Under that interpretation, the relativity we measure belongs to clocks, rods, and signal relations, not necessarily to reality at its deepest level. A universal present can still exist, even if it is not operationally available in the standard Einsteinian way.
Why I take this seriously
For me, this is not just about mathematical formalism. It is about whether physics should force us to deny some of the most basic structures of experience: that the present is real, that the future is not yet fixed in full, and that choice is not merely theatrical.
That does not mean experience automatically overrides physics. It means that when two interpretations make the same predictions, the one that preserves a real present and an open future deserves serious consideration rather than casual dismissal.
Neo-Lorentzian theory is attractive for exactly that reason. It offers a way to preserve the empirical success of relativity without immediately surrendering presentism, causal becoming, or the intuition that reality is unfolding rather than simply displayed all at once.
What NeoLET claims
In simple terms, NeoLET says:
- There is a real causal rest frame.
- Relativistic effects are physically real, not merely observational artifacts.
- The measured predictions remain consistent with Special Relativity.
- The present is objective, even if standard measurement procedures do not reveal it directly.
- The future is not just “already there” in the block-universe sense.
That is a radically different picture of reality, even though many of the equations used in day-to-day physics remain the same.
The real question
The deepest issue here is not whether relativity works. It does. The real issue is what kind of universe that success commits us to.
Are we living inside a completed four-dimensional structure, where “now” is only a local perspective? Or are we living in a world with a genuine present, where reality is still arriving?
I believe the second option remains open. This site explores that possibility.