Does Physics Demand Belief? An Exchange with John on Science and Faith

Fellowship Discussion Essay | 1 August 2026

Iron sharpeneth iron; so a man sharpeneth the countenance of his friend. — Proverbs 27:17

Occasion. This week’s notification email for the evangelization essay drew a reply from my friend John, who believes we have a disagreement about physics; I quote him whole:

“I think you said that physics demands a stronger belief than accepting Genesis and Jesus. I don’t think physics demands belief in anything! There are the theories of physics which are just theories, and there are the observations of nature, generally repeatable, that are similarly ‘just observations.’ The implications of observations can be overturned with new information at any moment. Any so-called conclusions are provisional at best. There’s no settled science, just observations as of today that also appear to be repeatable… Scientific thinking, rightfully done, is very hesitant thinking. Ready to be disproven at the next discovery. I see no conflict whatsoever between science and matters of faith. Faith seems to me to be the more shaky path because there is no set methodology (as far as I know) to revise beliefs. That makes faith subject to the human weakness of confirmation bias. Science certainly is already subject to confirmation bias, even with its methodology. So faith is even more so, in my view. Maybe I’m missing something. But it’s more food for discussion next time.”

This essay is the table set for that discussion. It makes four moves: first, an agreement; second, locating the actual disagreement; third, challenging the claim that physics demands belief in nothing; and fourth, claiming that faith lacks a revision methodology.

I. The Agreement: John’s Science Is the Right Science

Let it be said first and without reservation: John’s description of science rightly done is correct. Theories provisional; observations humble; conclusions held ready for overthrow at the next discovery; hesitancy as a virtue rather than a weakness. That is the fallibilism of the best philosophy of science — it is Karl Popper’s account almost to the word — and it describes the proper working temperament of every honest experimentalist. If the whole scientific enterprise spoke the way John’s letter speaks, the evangelization essay’s third section would never have needed writing. I would go further: John’s science is the science the Conscious Point Physics program tries to practice. Every result in that corpus is versioned, its open problems published beside its successes, its predictions exposed to measurements that could kill them — three of them were published before the nuclei in question were first measured, precisely so the framework could fail in public if it was wrong. Hesitant thinking, ready to be disproven, is our house style. So on the character of science itself, there is no disagreement between John and me at all.

II. The Actual Disagreement: Science Is Not the Thing the Essay Indicted

I think we have here an example of a misunderstanding of what was said. The introduction said that the materialist origin story “asks for more faith than Genesis,” and John heard “physics demands a stronger belief than Genesis.” Those are different claims. Here is the passage which John was criticizing: “a materialist origin story (matter eternal and uncaused, self-organizing, and producing the very mind now explaining it). For me, accepting such an explanation for existence, life, and purpose asks for more faith than accepting Genesis and Jesus.” The essay makes only the claim that faith in God creating the universe is more comprehensible than the claim that inert/unthinking matter organized randomly produces life and consciousness. The indictment was never of physics — not of the observations, not of the provisional theories, not of the method. The indictment was of a creed that speaks in science’s name: the materialist metaphysics which asserts that matter existed eternally and uncaused, that it organized itself, that it produced life without intending to and then produced mind — the very faculty now being used to explain matter — with no one directing any of it; and, riding on that creed, the cultural priesthood that delivers such pronouncements with the settled authority of a bishop. Not one clause of that creed is an observation. None of it is repeatable. None of it is hesitant. It is metaphysics wearing a lab coat — and the essay’s word for it was Scientism, precisely to keep it distinct from the science John defends.

And now notice something that I hope will please him: John’s own standard convicts the priesthood more efficiently than my essay did. If scientific thinking, rightfully done, is very hesitant thinking — if there is no settled science, only provisional conclusions — then what shall we call the public voice that announces, with no hesitancy whatever, that the universe came from nothing, that consciousness is an illusion of chemistry, that the human person is an accident, and that the matter of God is closed? By John’s definition, whatever that voice is, it is not science. It has left the domain of the repeatable and the provisional and entered the domain of faith commitments — while keeping science’s cultural authority as its vestment. That is the whole of Section III’s complaint, which John has also indicted. So the supposed disagreement about physics dissolves into an alliance: John and I both want science to be what he says it is, and we are both entitled to object when its name is borrowed by a metaphysics that follows none of its rules.

Regarding John’s statement that he sees no conflict between science and matters of faith. I agree with that statement when framed as follows: Science is based on a set of axiomatic assumptions that require faith that they will always be true, even though no experiment can prove they are true. The Christian faith also rests on axiomatic assumptions: that the words of the Bible are true, that a God created creation, and that God is good and loving. The faith of Science is in another domain from the faith of the BIble, but the two unify in the sense that the object of examination (e.g., the physical universe and its laws, and 2) the character of God) are two different aspects of the same source. God is the source of goodness and character, and He is the source of the law that the CPs obey.

III. Does Physics Demand Belief in Nothing? The Preconditions Under the Floor

Now the challenge, because John’s letter overstates his own case: “I don’t think physics demands belief in anything!” I understand the intent — physics-as-method does not require allegiance to any theory. But the practice of physics rests on axioms that observation cannot establish. The constants of nature are accepted as “what’s so.” They are givens.  Likewise, we accept time, and no one knows what time is. We accept mass as having inertia and interacting with fields in a particular way. We don’t know what inertia, mass, or fields are. In effect,  every scientist believes them in the only sense of belief that matters. My working definition, from the essay John has not yet reached: belief is the state of mind that holds a concept so strongly that a man acts upon it. By that standard, consider what every experimenter acts upon daily.

He believes in the uniformity of nature — that the future will resemble the past, that a law measured on Tuesday holds on Wednesday. David Hume showed two and a half centuries ago that no observation can establish this without circularity: the only evidence that the future will resemble the past is that past futures resembled past pasts — which assumes the very principle in question. Induction is not proved; it is trusted. He believes in the intelligibility of the universe — that reality is the kind of thing minds can model — a wonder Einstein himself marveled at, remarking that the eternally incomprehensible thing about the world is its comprehensibility. He believes in the reliability of his own reason and senses, which he cannot certify without using them, and in the validity of mathematics as a description of the physical, which no experiment establishes since every experiment presupposes it. He believes an external world generates his observations rather than a dream. And when John says conclusions ought to be held provisionally and revised by evidence — a norm I share — he should notice that this ought is not itself an observation. No instrument has ever measured an obligation. The revision norm is a commitment of intellectual ethics, adopted by faith in the value of truth. None of this is a gotcha, and I am not scoring points against science — the Christian happily affirms every one of those preconditions, and indeed argues they make more sense in a universe spoken by a rational God than in an accidental one (In the beginning was the Word — logos, reason itself — John 1:1). The point is symmetry: all inquiry, scientific and religious alike, rests on trust extended beyond proof. The interesting question was never whether a man will believe unprovable things. He will; he must; he does before breakfast. The question is whether his trust is well placed, and whether he has disciplines for testing it. Which brings us to John’s best arrow.

IV. The Best Arrow: Does Faith Lack a Revision Methodology?

John’s strongest claim is this: faith is the shakier path because it has no set methodology to revise beliefs, and is therefore even more exposed to confirmation bias than science. Let me do this properly — concede what is true in it, and then answer it with an inventory.

The concession first, gladly: the danger John names is real, Scripture itself names it, and religious history is littered with its casualties. For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears (2 Timothy 4:3) — confirmation bias, diagnosed in the first century. Whole movements have insulated their claims from every test; last week’s essay spent a section on the bondage that follows when a living leader’s word is placed above examination. John’s warning is one the fellowship should frame and hang on the wall.

But “no set methodology” is a claim about the furniture of faith, and the furniture is there — older than the scientific method, and in one case written into the Torah. Consider the inventory. The Berean standard: when Paul himself preached at Berea, the hearers were commended because they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so (Acts 17:11) — apostolic teaching submitted to documentary verification by laymen, and the verification praised, not punished. A falsification criterion in the Law of Moses: When a prophet speaketh in the name of the LORD, if the thing follow not, nor come to pass, that is the thing which the LORD hath not spoken, but the prophet hath spoken it presumptuously: thou shalt not be afraid of him (Deuteronomy 18:22). A prediction protocol with a kill condition, fifteen centuries before Christ — Popper in the Pentateuch. The standing command to test: Prove all things; hold fast that which is good (1 Thessalonians 5:21); believe not every spirit, but try the spirits whether they are of God (1 John 4:1). An empirical fruits test: by their fruits ye shall know them (Matthew 7:16) — teachers and doctrines evaluated by observable outcomes over time. The evidence-based founding: Luke opens his Gospel as an investigator, writing so that his reader may know the certainty of those things after tracing them from the very first (Luke 1:1–4); Paul publishes a list of over five hundred living eyewitnesses and dares his readers to check (1 Corinthians 15:6); Thomas the doubter is not expelled but invited to put his hand in the wounds (John 20:27). And the institutional machinery: the creeds were hammered out in adversarial councils where rival readings fought in public; the Reformation was a revision event on the grandest scale, and its motto — semper reformanda, always being reformed — is a standing confession that the Church’s interpretations remain correctable against the standard.

And there is the key that organizes the whole inventory, and I think John will recognize its shape at once, because it is his own two-layer picture of science transposed. In science, he says, there are observations (the data, humble and durable) and theories (provisional, forever revisable against the data). Faith rightly done has exactly that structure. The data of faith are revelation and its attestations: the text of Scripture, the fulfilled prophecies, the historical witness of the resurrection published and checkable, the changed lives accumulating across twenty centuries and every culture, the answered prayer, and the tested fruits. The theories of faith are the theologies — the systems, the interpretations, the premise chains, very much including mine — and the theologies are provisional, revisable, and endlessly revised against the fixed data, which is exactly what the mediator test of last week’s essay enforces: no man’s framework may sit above the Book; every framework is judged by whether it sends people back to the data. Confirmation bias in religion happens when this discipline is abandoned—when the theory is protected from the data, when the prophet may not be tested, when the fruits may not be examined. It is not a property of faith; it is the corruption of faith, precisely as p-hacking and prestige-deference are not properties of science but its corruption. The remedy is identical in both houses: fixed standards, adversarial review, predictions exposed to failure, and the humility to lose an argument. And lest this sound theoretical, I will point at the fellowship’s own furniture: our essays carry version numbers and changelogs; our theological syntheses label every claim by epistemic register — established data, systematic framework, speculative hypothesis; our working documents carry flag registers where challenged phrasings are argued and revised on the record; and the physics is built to be falsifiable on purpose. A visitor may judge whether that is methodless.

Faith even has an experimental protocol, stated by the Lord Himself: If any man will do his will, he shall know of the doctrine, whether it be of God (John 7:17) — and its psalmic form, O taste and see that the LORD is good (Psalm 34:8). The claim is testable in the first person: live the Way honestly for a season and observe the fruits in your own character, your household, your peace. It is not laboratory science — the instrument is a life, the trial cannot be blinded, and the run takes years. But it is empiricism, of the kind by which men actually decide the largest questions: the same kind by which one learns whether a spouse is faithful or a friend is true — evidence accumulated through committed trust, not before it. Faith is the substance of things hoped for, the evidence of things not seen (Hebrews 11:1) was never a license for believing without evidence; it is a description of acting on evidence that has not yet become sight.

V. Where That Leaves the Shakiness Question

So which is the shakier path? Put the two houses side by side, honestly. Both rest on unprovable floors — induction and intelligibility under the one; the veracity of God under the other. Both possess revision disciplines; both are staffed entirely by bias-prone human beings; both are corrupted in exactly the same way when the discipline is abandoned, and the theory is shielded from the data. The difference is not method versus methodlessness. The difference is the object of the trust and the stakes of the trial. Science tests claims about the repeatable behavior of the creation; faith tests a claim about the character of a Person and the destination of a life — and on that question, abstention is not available. Every man bets his life on some ultimate account of what he is and why; the materialist bets, the agnostic bets by deferral, and the Christian bets. The only live question is which account survives its tests — the tests of history, of coherence, of prophecy, of fruit, and of the taste-and-see trial run in one’s own kitchen. That is a question worth a fellowship’s Sunday mornings, and it cannot be settled in an email.

VI. To John, and to the Fellowship

John — thank you. You wrote “maybe I’m missing something,” and my answer is something specific: the distinction between the science you rightly love and the creed that borrows its coat, and the inventory of revision disciplines that faith has carried since Moses. But you have also supplied something: the cleanest statement of scientific humility this fellowship has on file, and a warning about confirmation bias that we should turn on ourselves regularly and without anesthesia — beginning with my own framework, which must remain forever a theory revised against the Book, never the reverse. This is what the fellowship is for: not a room where everyone arrives agreeing, but a table where iron sharpens iron and the countenance of a friend is the whetstone. Read the essay when you can — Section III will read differently now, and I suspect you will find yourself quoted in spirit on its side. And come Sunday ready to press wherever this reply is weakest, because on the account I have been defending all along, the God who is Truth is honored by every honest test. “the honour of kings is to search out a matter.” (Proverbs 25:2).

Iron sharpeneth iron; so a man sharpeneth the countenance of his friend. (Proverbs 27:17)

— Thomas

Renaissance Ministries | Hyperphysics Institute

Of one heart to make Christ King. 1 Chronicles 12:38