Is there scientific evidence for an intelligent designer?

Dr. Walter L. Bradley
Dr. Walter L. Bradley

Dr. Walter L. Bradley (C.V. here) is the Distinguished Professor of Engineering at Baylor, and a great example of the integration of Christian faith and a stellar academic career. He is not a “secret-service” Christian. Rejecting the notion of safe, private Christianity, he instead projects his Christian faith outward, where his students and colleagues can be aware of his beliefs.

Below I analyze a lecture I chose from the hundreds of public lectures he has given all over the world on the integration of Christian faith with other public, testable areas of knowledge. In this lecture, entitled “Is There Scientific Evidence for an Intelligent Designer?“, Dr. Bradley explains how the progress of science has made the idea of a Creator and Designer of the universe more acceptable than ever before.

Evidence #1: The design of the universe

1. The correspondence of natural phenomena to mathematical law

  • All observations of physical phenomena in the universe, such as throwing a ball up in the air, are described by a few simple, elegant mathematical equations.

2. The fine-tuning of physical constants and rations between constants in order to provide a life-permitting universe

  • Life has certain minimal requirements; long-term stable source of energy, a large number of different chemical elements, an element that can serve as a hub for joining together other elements into compounds, etc.
  • In order to meet these minimal requirements, the physical constants, (such as the gravitational constant), and the ratios between physical constants, need to be withing a narrow range of values in order to support the minimal requirements for life of any kind.
  • Slight changes to any of the physical constants, or to the rations between the constants, will result in a universe inhospitable to life.
  • The range of possible ranges over 70 orders of magnitude.
  • Although each individual selection of constants and ratios is as unlikely as any other selection, the vast majority of these possibilities do not support the minimal requirements of life of any kind. (In the same way as any hand of 5 cards that is dealt is as likely as any other, but you are overwhelmingly likely NOT to get a royal flush. In our case, a royal flush is a life-permitting universe).

Examples of finely-tuned constants and ratios: (there are more examples in the lecture)

a) The strong force: (the force that binds nucleons (= protons and neutrons) together in nucleus, by means of meson exchange)

  • if the strong force constant were 2% stronger, there would be no stable hydrogen, no long-lived stars, no hydrogen containing compounds. This is because the single proton in hydrogen would want to stick to something else so badly that there would be no hydrogen left!
  • if the strong force constant were 5% weaker, there would be no stable stars, few (if any) elements besides hydrogen. This is because you would be able to build up the nuclei of the heavier elements, which contain more than 1 proton.
  • So, whether you adjust the strong force up or down, you lose stars than can serve as long-term sources of stable energy, or you lose chemical diversity, which is necessary to make beings that can perform the minimal requirements of living beings. (see below)

b) The conversion of beryllium to carbon, and carbon to oxygen

  • Life requires carbon in order to serve as the hub for complex molecules, but it also requires oxygen in order to create water.
  • Carbon is like the hub wheel in a tinker toy set: you can bind other elements together to more complicated molecules (e.g. – “carbon-based life), but the bonds are not so tight that they can’t be broken down again later to make something else.
  • The carbon resonance level is determined by two constants: the strong force and electromagnetic force.
  • If you mess with these forces even slightly, you either lose the carbon or the oxygen.

3. Fine-tuning to allow a habitable planet

  • A number of factors must be fine-tuned in order to have a planet that supports life
  • Initial estimates predicted abundant life in the universe, but revised estimates now predict that life is almost certainly unique in the galaxy, and probably unique in the universe.
  • Even though there are lots of stars in the universe, the odds are against any of them supporting complex life.
  • Here are just a few of the minimal requirements for habitability: must be a single star solar system, in order to support stable planetary orbits, the planet must be the right distance from the sun in order to have liquid water at the surface, the planet must sufficient mass in order to retain an atmosphere, etc.

The best current atheist response to this is to speculate that there may be an infinite number of unobservable and untestable universes. (I.e. – the Flying Spaghetti Monster did it)

Evidence #2: The origin of the universe

1. The progress of science has shown that the entire physical universe came into being out of nothing (= “the big bang”). It also shows that the cause of this creation event is non-physical and non-temporal. The cause is supernatural.

  • Atheism prefers an eternal universe, to get around the problem of a Creator having to create the universe.
  • Discovery #1: Observations of galaxies moving away from one another confirms that the universe expanded from a single point.
  • Discovery #2: Measurements of the cosmic background radiation confirms that the universe exploding into being.
  • Discovery #3: Predictions of elemental abundances prove that the universe is not eternal.
  • Discovery #4:The atheism-friendly steady-state model and oscillating model were both falsified by the evidence.
  • And there were other discoveries as well, mentioned in the lecture.

The best atheistic response to this is to speculate that there is an unobservable and untestable hyper-universe outside our own. (I.e. – the Flying Spaghetti Monster did it)

Evidence #3: The origin of life

1. The progress of science has shown that the simplest living organism contains huge amounts of biological information, similar to the Java code I write all day at work. This is a problem for atheists, because the sequence of instructions in a living system has to come together all at once, it cannot have evolved by mutation and selection – because there was no replication in place prior to the formation of that first living system!

  • Living systems must support certain minimum life functions: processing energy, storing information, and replicating.
  • There needs to be a certain amount of complexity in the living system that can perform these minimum functions.
  • But on atheism, the living system needs to be simple enough to form by accident in a pre-biotic soup, and in a reasonable amount of time.
  • The minimal functionality in a living system is a achieved by DNA, RNA and enzymes. DNA and RNA are composed of sequences of proteins, which are in turn composed of sequences of amino acids.

Consider the problems of building a chain of 100 amino acids

  • The amino acids must be left-handed only, but left and right kinds are equally abundant in nature. How do you sort out the right-handed ones?
  • The amino acids must be bound together using peptide bonds. How do you prevent other types of bonds?
  • Each link of the amino acid chain needs to be carefully chosen such that the completed chain with fold up into a protein. How do you choose the correct amino acid for each link from the pool of 20 different kinds found in living systems?
  • In every case, a human or other intelligence could solve these problems by doing what intelligent agents do best: making choices.
  • But who is there to make the choices on atheism?

The best current atheistic response to this is to speculate that unobservable and untestable aliens seeded the earth with life. (I.e. – the Flying Spaghetti Monster did it)

The problem of the origin of life is not a problem of chemistry, it is a problem of engineering. Every part of car functionality can be understood and described using the laws of physics and chemistry. But an intelligence is still needed in order to assemble the components into a system that has the minimal requirements for a functioning vehicle.


In all three areas, scientists expected that the data would be consistent with atheism. First, scientists expected that life could exist even if the physical constants and ratios were altered. The progress of science said NO. Second, scientists expected that the universe would be eternal. The progress of science said NO. Third, scientists expected that the origin of life would be simple. The progress of science said NO.

6 thoughts on “Is there scientific evidence for an intelligent designer?”

  1. I really enjoyed reading this post. I found you through Apologetics 315. I wrote a paper on scientifically proving God’s existence and would love for you to take a look at it and tell me what you think.

  2. I must take issue with your assertion that “This is a problem for atheists, because the sequence of instructions in a living system has to come together all at once, it cannot have evolved by mutation and selection – because there was no replication in place prior to the formation of that first living system!”

    The problems arise in how you define “living system” I suppose. What if life began as a simple self-replicating molecule? Would you consider that life? Probably not. Would you consider it protolife? Still probably not. Would you consider a more complicated replicating molecule, one that evolved due to errors in self-replication to be more efficient and therefore outcompeting previous versions of itself, to be life?

    Where would you draw the line? We may never know exactly how life began, but would you at least entertain a plausible hypothesis or would you dismiss it by saying “show me the evidence?” If so, what evidence would be enough to convince you otherwise? I’d like to know. :)

    1. You have to have certain minimal functions, e.g. – capture energy, store energy, process energy, replicate. The smallest organism we know of that can do that would be something like Mycoplasma genatalium, which has about 500 protein genes. Each protein is composed of a chain of a few hundred amino acids that are specified and complex. If you fill the universe with reactants, and react the entire universe at Plank time for the entire history of the universe, you’re unlikely to get one protein. So what we do is look at the biological information, recognize that it is analogous to text or Java code, and infer an intelligence. Because matter, chance and time are not sufficient to get the results even under ideal circumstances.

      I actually listen to debates on this between guys like Walter Bradley and agnostics like Robert Shapiro, who is an OOL expert.

  3. You’ve got a bit of a math error there, common to those who debate the possibility of abiogenesis. To define something as “alive” it must, as you correctly point out, metabolize and replicate. The odds of this occurring at once spontaneously are quite improbable. The thing is – they don’t have to occur at the same time. The replication function probably occurred first.

    We simply do not know for sure HOW this all happened, but the evidence overwhelmingly supports that it DID happen. There’s just no other explanation that’s close to viable. Science is the study of the material world. If you want to believe things outside of the material world, science is virtually irrelevant, since it’s findings hold no water if there are factors we can’t control.

    You can’t use the fact that you don’t believe theory A as evidence for theory B.

    1. Dude. You can’t have REPLICATION without a living system that can REPLICATE. So there is no mutation and selection available to create the first living organism. The replication is INCLUDED in the odds of getting the first living system, it’s one of the MINIMAL set of behaviors that describe a living system.

      I think the second paragraph you wrote is instructive because it echoes something that Richard Lewontin said a while back:

      Our willingness to accept scientific claims that are against common sense is the key to an understanding of the real struggle between science and the supernatural. 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 for 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. The eminent Kant scholar Lewis Beck used to say that anyone who could believe in God could believe in anything. To appeal to an omnipotent deity is to allow that at any moment the regularities of nature may be ruptured, that miracles may happen.

      Yes, by all means. Believe in an unobservable and untestable quantum vacuum outside our universe to explain the Big Bang. Believe that the unobservable and untestable multiverse that explains the fine-tuning. Believe in unobservable and untestable aliens seeding the Earth with life. Believe in unobservable and untestable pathways to molecular machinery. Believe that rearrangements of atoms can create free will and consciousness. And believe that objective morality can emerge in an accidental universe. Believe anything you want, based on your faith commitment to naturalism and materialism. It’s your choice. But when I chose my religion, I let the facts (not assumptions) decide what I was going to believe. One of us is after truth, and the other is satisfied with self-serving speculations. And that’s a choice we all have to make.

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