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Tour – Noble – Slime Mold: The Code That Cares

Tour – Noble – Slime Mold: The Code That Cares

Dr. James Tour, synthetic chemist at Rice University:

"Molecules don't care about life. They never have. They never will."

He's right about the molecules. Tour spent decades proving that the building blocks of life can't self-assemble. Nobody has ever made even a dipeptide — two amino acids hooked together — under prebiotic conditions. Time is the enemy. Molecules fall apart faster than they form. "If you gave me all the parts of a cell in individual bottles — make a cell. Nobody would ever suggest that they could."

The molecules don't care. Chemistry is indifferent.

But the cell does.

Dr. Denis Noble, physiologist at Oxford, built the first computational model of a living heart cell in 1958. He spent 60 years inside the lab and discovered something the textbooks don't allow: the cell has knowledge that isn't in the DNA.

The cell proofreads its own genome — fixing 300,000 errors per replication before it will allow itself to divide. How does it know when it's done? "We don't know," Noble says. The cell refuses to divide until correction is complete. DNA can't copy itself without the cell being alive first. The genome is an organ of the cell, not the other way around.

"The body as a whole can tell the genome what to do." When you exercise, muscle cells send messengers to the nucleus telling the DNA to make more protein. Two-way causation. The "selfish gene" is a servant, not a master.

Noble: "Agency is fundamental to any living system." The immune system mutates on purpose during infection. Corn rearranges its own genome under stress. The central dogma — DNA → everything — has, in Noble's words, "the wrong metaphysics."

Two insiders. Two attacks on the materialist story. Tour from the beginning: the molecules can't self-assemble. Noble from the mechanism: the genome can't self-run. Life requires life. The chemistry doesn't work (Tour). The code can't execute without the cell already being alive (Noble).

Now look at what's growing in a Petri dish.

Take a piece of bark from a tree. Put it in a dish with some water. Leave it at room temperature. Within days, slime molds appear — organisms with no brain, no nervous system, no organs. A plasmodial slime mold is ONE cell — one membrane, one cytoplasm, thousands of nuclei sharing the same space. It crawls across the dish hunting bacteria. It navigates mazes. It remembers where it's been and avoids dead ends.

Break it into pieces and each piece continues to function. Cut it into many parts and they can find each other again and fuse — sharing cytoplasm, sharing memory. One organism can be cut into dozens of fragments and reassemble itself into a working whole.

When food runs out, the cellular slime mold does something extraordinary. Individual amoeba cells — separate, independent, each with its own membrane and nucleus — secrete a chemical signal (cyclic AMP). Other cells detect it and move toward the source. They aggregate. They form a slug. The slug moves toward light. It finds a good spot. The cells in the back undergo programmed cell death to become the stalk. The cells in the front become spores.

No cell has the plan. No cell sees the whole picture. Each cell just responds to local data — chemical concentrations, light gradients, physical contact. The complex behavior emerges from simple rules. IF food is gone AND cAMP is present, THEN move toward cAMP. IF I'm in the back of the slug, THEN die. IF I'm in the front, THEN become a spore.

That's not "just chemistry." Chemistry doesn't refuse to divide. Chemistry doesn't commit programmed cell death for the good of the structure. Chemistry doesn't navigate mazes.

Tour says the molecules don't care. Noble says the cell does. The slime mold shows you both — simultaneously. The molecules underneath the slime mold don't care. They're just proteins, lipids, nucleotides doing what chemistry does. But the cell they form DOES care. It hunts. It remembers. It sacrifices itself for the structure. It makes decisions based on data.

Where does the caring come from? Not from the molecules — Tour proved that. Not from the DNA — Noble proved that. The caring comes from the organization. From the code written into the system. From the IF/THEN rules that each cell executes — not because the molecules "want" to, but because the code tells them to.

But then we look at something different.

The slime mold's spores can survive 75 years dormant. Three-quarters of a century in a state of suspended animation, waiting for favorable conditions. When they arrive, the spore germinates and the cycle starts again. A single cell with no brain, no nervous system, no organs — executing a program that was written before it existed.

Tour: "I presume science will explain it someday."
Noble: "Agency doesn't come from anywhere — it's just what living things do."

Both men see the design. Both see the agency. Noble refuses to name the Designer. They're standing at the edge of the cliff, looking at the same evidence, saying "we don't know." And it is OK to say I don't know.

But a slime mold in a Petri dish knows what it needs to do. It just does it. No one told it. No one trained it. The code was there from the beginning.

Code requires a coder.

The molecules don't care (Tour). The cell does (Noble). The slime mold proves it — a single cell with no brain navigating mazes, remembering paths, sacrificing itself for the whole, and waiting 75 years for the right moment to start again.

Who wrote that code?

Genesis 1:26-28 — Then God said, "Let Us make man in Our image, according to Our likeness, so that they will have dominion over the fish of the sea and over the birds of the sky and over the cattle and over all the earth and over every creeping thing that creeps on the earth."

And God created man in His own image, in the image of God He created him; male and female He created them. God blessed them, and God said to them, "Be fruitful and multiply, and fill the earth, and subdue it; and have dominion over the fish of the sea and over the birds of the sky and over every living thing that creeps on the earth."

We are a rebellious people, thinking we can go our own way. Turn unto the Lord while He may be found. He came to me in 2018 after I found out I had ALS. The peace that passes understanding will come with obedience to His word and will. Just lately, I have felt compelled to study the soil, microbes, and slime mold. Just of late, my mind has been opened to thoughts that have not been my own. Ask, and it shall be given. Matt 7:7.

The Lithium Problem

The Big Bang story is the one everyone knows. Thirteen point eight billion years ago, everything that is began as something incomprehensibly small and hot, and expanded outward. In the first three minutes, the lightest elements formed — hydrogen, helium, trace amounts of lithium and beryllium. Everything heavier came later, cooked up in stars and scattered by supernovas. That’s the story. It’s told with confidence, and for good reason: two of those predictions work beautifully.

David wrote, “The heavens declare the glory of God, and the sky above proclaims His handiwork” (Psalm 19:1). He didn’t have a telescope. He didn’t need one. The declaration is there for anyone with eyes to see. But when you’re committed to a story about how the heavens got here without Him, even the declaration becomes something to manage.

NASA’s nine-year WMAP image of the cosmic microwave background — the “baby picture” of the universe at 380,000 years old. This data feeds the baryon density predictions used in Big Bang nucleosynthesis. Credit: NASA / WMAP Science Team.

WMAP cosmic microwave background map

Big Bang nucleosynthesis — the name for the physics that calculates what the first three minutes should have produced — predicts the primordial abundances of the lightest elements. Hydrogen? Spot on. Helium-4? Remarkably close. Deuterium? Spectacular agreement between prediction and observation, confirmed by looking at the most distant, oldest gas clouds we can find. When the prediction and the measurement line up like that, it’s a real success. Nobody’s taking that away.

But then there’s lithium.

The same model, using the same physics, fed the same cosmic baryon density measured by the Wilkinson Microwave Anisotropy Probe — the same input that nails hydrogen and helium — predicts that the early universe should have produced roughly three to four times more lithium-7 than we actually find. Not three percent more. Three to four times more. The discrepancy is now at 4-5 sigma, which in plain English means it’s not a fluke, not a measurement error, not something that’s going to go away with a better telescope. It’s real. It’s been called the “cosmological lithium problem” in the literature for over a decade, and it’s not getting smaller. A 2008 paper out of Michigan State was titled “A Bitter Pill: The Primordial Lithium Problem Worsens.” It has worsened.

The Schramm plot: primordial abundances of helium-4, deuterium, and lithium-7 as a function of cosmic baryon density. Helium and deuterium observations overlap with predictions. Lithium-7 does not — the observed values sit a factor of 3-4 below the predicted curve.

Schramm plot showing lithium-7 discrepancy in Big Bang nucleosynthesis

Now here’s where it gets interesting — not the problem itself, but the response to the problem.

When hydrogen and helium match the prediction, that’s celebrated as confirmation of the model. When lithium doesn’t match the prediction, the model isn’t questioned. The lithium is. The proposed fix is that stars somehow destroy their own lithium over time — that the lithium was there at the beginning, as predicted, but something in stellar interiors burned it away over billions of years, leaving us with less than the model says should be there. The mechanism isn’t settled. The details are murky. But the direction is consistent: the model stays, the data needs explaining away.

Proverbs 18:17 says, “The one who states his case first seems right, until the other comes and examines him.” The Big Bang had the floor first. It told its story, and the story sounded right — still does, in the parts that work. But lithium just walked into the courtroom. And the response of the first witness is to talk louder, not to listen.

Stop and look at that for a second.

If the model predicts X and you find X, you say “the model works.” If the model predicts X and you find one-third of X, you say “something must have destroyed two-thirds of X.” In both cases, the model is assumed right. The first case is science. The second case is something else. The second case is what you do when the model can’t be wrong — when the commitment to the model comes before the data.

If that pattern feels familiar, it should. You’ve seen it before.

Do you recall the beginning of covid? “Two weeks to flatten the curve” became “until the vaccine” became “until the boosters” became “the new normal.” The goalposts moved and moved and moved, and the confidence never wavered. States drew hard lines against “wrong think” — doctors who had studied hard, who had made sacrifices, who had built careers so that we would trust them, were silenced for asking questions the framework couldn’t answer. I am thankful to God that my ALS diagnosis came just before all of this. We were living in Minnesota, and if you haven’t had your head in the sand for three years, you know how that went down.

The current status of doctors is the current status of astrophysicists. They moved the story, kept the lab coat, and still want our trust. After everything that happened — after the contradictions, the silenced questions, the quiet reversals nobody acknowledged — they want us to trust them. And science.

The word science used to mean something. It comes from the Latin scientia — knowledge. That’s all it was. What do we know, and how do we know it. Newton called his work “natural philosophy” because the word still just meant knowledge back then. But over time the word narrowed, and then the authority claim hardened on top of it. “Science” went from meaning “what we know” to “the method by which we know” to “the institution that tells you what to believe.” Same word. Different thing wearing it. Somewhere along the way, “science” stopped meaning knowledge and started meaning trust me.

Jeremiah said this a long time ago: “Cursed is the man who trusts in man and makes flesh his strength, whose heart turns away from the LORD” (Jeremiah 17:5). He wasn’t talking about doctors or cosmologists — he didn’t have them — but he was talking about the human instinct underneath both. We want an authority we can see, a consensus we can lean on, a framework we can trust because the people in white coats told us to. And when the framework cracks, the instinct isn’t to question the framework. The instinct is to patch it and keep trusting.

That’s not a slam on scientists. Most of the people working on the lithium problem are doing honest, careful work, measuring stellar atmospheres, calculating nuclear reaction rates, looking for some pathway that might account for the missing lithium. Some of them might be right. There could be a stellar depletion mechanism that nobody’s found yet. That’s possible. But the shape of the search reveals the assumption: the answer must be something that preserves the model. Nobody in the mainstream literature is asking whether the model itself is the problem. That option isn’t on the table.

Richard Lewontin, the Harvard evolutionary biologist, told us why. Writing in the New York Review of Books in 1997, he said it more plainly than any scientist on his side of the line usually does:

“We take the side of science in spite of the patent absurdity of some of its constructs, in spite of its failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community of unsubstantiated just-so stories, because we have a prior commitment, a commitment to materialism. It is not that the methods and institutions of science somehow compel us to accept a material explanation of the phenomenal world, but, on the contrary, that we are forced by our a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations, no matter how counter-intuitive, no matter how mystifying to the uninitiated. Moreover, that materialism is absolute, for we cannot allow a divine foot in the door.”

Read that carefully. He didn’t say the evidence compels the materialist conclusion. He said the commitment comes first, and the apparatus of investigation is built to produce explanations that fit the commitment. The data is examined through a lens that was chosen before the data arrived.

The lithium problem is a small, clean example of exactly what Lewontin described. The model predicts an amount. The universe has a third of that amount. And the response is not “maybe the model is wrong” — the response is “find a way to make the universe match the model.” The model is the prior commitment. The lithium is the data that doesn’t fit. The apparatus of investigation produces explanations that preserve the model, because the model is what can’t be questioned.

There’s a pattern in Scripture that looks like this. Romans 1 says that what can be known about God is plain — He made it plain — but people “by their unrighteousness suppress the truth.” They don’t just miss it. They have it, and they push it down. The word Paul uses is katechontōn — holding down, suppressing, pressing the truth under something else. The truth is there. The commitment to something else comes first. The truth gets explained away.

The lithium problem isn’t proof of God. It’s not proof the Big Bang didn’t happen. It’s one crack. One place where the confident story has a seam that doesn’t line up, and the way the seam gets handled tells you something about the story — not about the universe, but about the people telling it. The universe is fine. The lithium is what it is. It’s the story that has the problem.

If the framework can’t account for the data, and the response is to keep the framework and manage the data, that’s worth noticing. It’s worth noticing not because it proves anything, but because it shows you what’s being protected. And once you see what’s being protected, you can start asking why.

Jesus said, “If you abide in My word, you are truly My disciples, and you will know the truth, and the truth will set you free” (John 8:31-32). The truth sets free. The framework — any framework that can’t be questioned — keeps you in.

One crack. That’s all. Just the thing itself.

References:

• Fields, B.D. (2012). “The Primordial Lithium Problem.” Annual Review of Nuclear and Particle Science, 62, 105-123.

• Cyburt, R.H. (2008). “A Bitter Pill: The Primordial Lithium Problem Worsens.” arXiv:0808.2818.

• Lewontin, R. (1997). “Billions and Billions of Demons.” New York Review of Books, Jan 9, 1997.