Fact Checking the Evolutionistshere and here). Here I will examine two more of Velasco’s evidences: the recurrent laryngeal nerve and a common genomic element known as an ALU.
In both these examples Velasco makes suggestions that are at odds with the facts. For the recurrent laryngeal nerve, Velasco sets up the problem with the claim that in fish the heart is in between the head and the gills. And for the ALU DNA sequences, Velasco suggests they are identical in different species. But Velasco is moving through a large amount of material, and speaking for about an hour. Not everything is going to be spot on, and that’s understandable.
And even more importantly, these misstatements do not affect the overall argument for evolution that Velasco makes in these two cases. So the problem here is not the miscues, but rather the overall arguments themselves. And the problem with these arguments, from a scientific perspective, is that both crucially rely on the flawed premise that similarity implies common ancestry.
If that were true then evolution would have been proven long ago. And indeed, it has been so proven, in the minds of evolutionists. But similarity does not imply common ancestry. There is no demonstration or proof that would establish such a bizarre claim.
Furthermore, not only is the argument not sound from a scientific perspective, but each argument raises substantial problems. For instance, the recurrent laryngeal nerve runs from the brain to the larynx. Evolutionists like to show examples in fish and in the giraffe. The idea is that as fish evolved into the giraffe, the nerve continued all the while to innervate the larynx, even though it became longer and longer as the neck became longer.
But such a long nerve raises all kinds of thorny molecular biology problems. Certainly the simpler, more direct route would have been selected for. The only thing evolutionists can say is that such a design was not possible. But they give no concrete reason. As Velasco put it:
Now as we evolved, the heart moved farther down and we grew necks. But the nerve, generation after generation after generation, got stretched longer and longer and longer. It can’t just reroute itself to go straight to the larynx.
Why not? Such special pleading is common in evolutionary thinking. They say evolution can create all kinds of amazing things. It can spontaneously morph a fish into a giraffe. It can create everything from a rose to a bald eagle. It created the incredible cell with its astonishing molecular machines and instructions. In fact, evolution created the entire biological world. And of course evolutionary thinking is by no means limited to biology. The cosmos evolved also. Evolution created everything.
And yet, when it comes to maintaining the simpler, more efficient, higher fitness path for the recurrent laryngeal nerve, evolution mysteriously fell short. For some unknown reason, the mastermind creator of the universe couldn’t maintain a simple nerve arrangement. Evolutionists can’t explain why, but they’re sure of this story.
The ALU argument also relies on the flawed claim that similarity implies common ancestry. In this case, ALU sequences are related to an RNA gene that helps to form a molecular machine known as the signal recognition particle that helps to govern the movement of protein traffic in the cell. Evolutionists have no explanation how that machine could have evolved.
Furthermore retrotransposons such as ALUs are inserted into the DNA with the help of the reverse transcriptase protein which constructs the DNA segment from the RNA copy. But, again, evolution has no credible explanation for how the complex reverse transcriptase protein could have evolved.
So the very presence of ALUs does not comport with evolutionary theory. This hardly makes for very good supporting evidence.