Last year, when I was speaking at a church in South Dakota for a Heroic Truth Event, I met Brian Johnson. He invited me on his Podcast, and we had a great conversation about “hot” cultural issues today.

Brian is one of the founders of South Dakota Apologetics, an organization dedicated to spreading the Gospel and helping fellow Christians better understand why they believe what they believe. Brian and his buddies at SDA actually offer their speaking services for free, so check ‘em out!

Brian is especially passionate about the evidence for intelligent design. Given his interest and expertise, I recent caught up with him and asked him some pressing questions about the evidence for intelligent design. Enjoy!

SEAN MCDOWELL: Are there any recent scientific advances that are changing what we know about the inner workings of the human body?

BRIAN JOHNSON: I think that accolade needs to go to the discovery of the DNA double helix in 1953 by Crick and Watson. Once this was discovered it blew open the doors to a whole new world of biology. From that we have been able to begin to piece together an entirely new understanding of what it takes to make our bodies function. This has led to major advancements in medicine as well as many other disciplines. The discovery of DNA has also enabled us to build an incredibly strong case for Intelligent Design.

SEAN MCDOWELL: What got you interested in DNA as evidence for design? And why do you think this is such an important area for Christians, and in particular students, to understand?

BRIAN JOHNSON: I've always been interested in science and it was the scientific evidences for God that really started to convince me of His existence. As I started to look into the biological evidences I was awestruck at how obvious it was to make a design inference based on the inner workings of the cell. The molecular machines that are working inside each of our bodies at this moment scream of a designer.

If more Christians understood the beautiful structure of how the different processes within our bodies function I know it would not only strengthen their faith but would give them a much greater sense of just how amazing God's creation really is. And this is certainly true for students who are often not exposed to the evidence for ID since our schools only teach Darwinian evolution.

SEAN MCDOWELL: Can you give a few specific examples of things in DNA that point to design?

BRIAN JOHNSON: Sure!

The first argument for Intelligent Design is based on the information we find in the cell. The arrangements of the four nucleotides, ACTG, contain specified information and convey meaning for the production and arrangements of proteins. Stephen Meyer makes the case for this in his book Signature in the Cell.

The second is a process called DNA error correction (aka, DNA repair). This process is mind-boggling and is currently at work in your body as you read this. Your body is creating new DNA at this moment in a process known as DNA Replication. During this process the DNA double helix is split in two, kind of like a zipper on a coat. As you unzip your coat you then have two sides of that zipper. Now pretend that the 'teeth' of the zipper on one side of the coat are each represented by a nucleotide letter of either a, c, t, or g. During the replication process a brand new set of 'teeth' are joined to the existing set of 'teeth' much the same way as when you zip the coat up and the two set of 'teeth' are joined together to seal the coat. If during this process an incorrect nucleotide is put down an error correcting process catches the error, stops the process, plucks out the wrong nucleotide, inserts the correct nucleotide, and then allows the replication process to continue. Describing this process as mind-blowing is actually an understatement.

The third process is one that has just recently been discovered. It now appears that in addition to repair mechanisms DNA also contains proofreading processes as well that make sure the information that passes through it is as accurate as possible. This all happens where messenger RNA transcripts are translated into proteins. The complexity of these processes is simply inconceivable.

SEAN MCDOWELL: Isn’t Intelligent Design based on a “God of the gaps” fallacy?

BRIAN JOHNSON: The God of the gaps objection is a common one. But it is mistaken. Rather than arguing from gap in our knowledge (i.e., what we can’t explain), Intelligent Design reasons from what we do know about the world by considering all the evidence and making an “inference to the best explanation.” This is the exact same scientific method Darwin used in his theory of natural selection. If you want to disregard the method we just used to infer an Intelligent Designer as the cause for what we find in the genome, then you must also reject Darwin's conclusion as well. The knife cuts both ways.


You can find the original version of this article on Sean McDowell's blog.