Quadroped Devolution?

Take a look at the following article from “IFL Science” (I won’t mention what the “IFL” stands for). The link to it is at the end of the article, followed by my comments:

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In its most extreme form, Uner Tan Syndrome is characterized by loss of balance and coordination, impaired cognitive abilities and a habitual quadrupedal gait on all fours. Since its discovery, some have tried to interpret this quadrupedalism from an evolutionary perspective, suggesting that it’s an expression of our primate ancestry; an instance of evolutionary reversal to a primitive state, or “devolution”.

Debunking that notion is a new analysis published in PLoS One last week. Quadrupedalism in healthy adults, or those with a physical disability, they found, can be explained using biomechanical principles, rather than evolutionary assumptions. 

In 2005, evolutionary biologist Uner Tan described a Turkish family with 19 siblings, 5 of whom exhibited impaired cognitive abilities, dysarthric speech, cerebellar hypoplasia, and habitual quadrupedal gait on hands and feet. Tan interpreted these symptoms as examples of human devolution, stating how they “may provide us with some important clues about the transition from quadrupedality to bipedality”. A mutation in a receptor gene is said to be the cause of some of the symptoms, though these reported genetic associations appear to only explain part of the story. 

To support their devolution claim, Tan and colleagues said that people with UTS use “primate-like” diagonal sequence quadrupedalism, a type of gait that distinguishes primates from most other mammals. The next time you walk, notice how your right arm swings forward when you take a step with your left foot. Then look at your cat or dog: Their right forelimb and leg move forward together, a gait known as lateral sequence.

Recent research has shown how those with UTS walk differently from non-human primates: They put their weight on their wrists, not their knuckles. Now, a team led by Liza Shapiro, from the University of Texas at Austin, analyzed 518 quadrupedal strides from footage of the Turkish family members with UTS (available through the documentary “The Family That Walks On All Fours”), as well as video sequences from other families. 

They found that individuals with UTS almost exclusively used lateral sequence, not diagonal sequence, quadrupedal gaits. Diagonal sequence was only very occasionally used and it wasn’t the preferred gait. 

Additionally, the team found that the quadrupedalism exhibited by people with UTS resembles that of other adults asked to walk quadrupedally in an experimental setting. However, unlike the volunteers in these experiments, those with UTS can move quite effectively on all fours. 

Their walk is a byproduct of a hereditary and neurological condition that complicates their sense of balance. And to adapt, they have developed quadrupedalism. “I was determined to publish this and set the record straight, because these erroneous claims about the nature and cause of the quadrupedalism in these individuals have been published over and over again,” Shapiro tells The Washington Post, “without any actual analysis of the biomechanics of their gait and by researchers who are not experts in primate locomotion. 
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http://www.iflscience.com/health-and-medicine/human-quadrupeds-are-not-examples-devolution

What I really noticed, was a couple of statements.

“Quadrupedalism in healthy adults or those with a physical disability, they found, can be explained using biomechanical principles rather than evolutionary assumptions.”

That’s all evolution is.  An assumption, not science. And it was an assumption made without any analysis and promoted by people looking to promote evolution, while falsely (as Liza Shapiro demonstrated) calling it science!

If you read carefully, you’ll see that it evolutionary
biologist “Uner Tan” stated clearly that he began
his studies of these people by first assuming that
it was an example of “devolution”.  True scientists
simply don’t do this!

Science requires one of two things to be “science”.
And these aren’t my rules.  These are the rules of
science as we know it.  And it requires either;

1) Direct observation.

Or…

2) Repeated testing with repeatable results.

MacroEvolution has neither of these things.

Liza Zhapiro also said the following;

“I was determined to publish this and set the record
straight, because these erroneous claims about the
nature and cause of the quadrupedalism in these
individuals have been published over and over again.”

So they were, “published over and over again”.

And stated as “fact”, of course.  As being “science”.

So here’s my question to you;

How many school books had Uner Tan’s assumptions in them, being taught to the children as “scientific fact and don’t you doubt it, because here’s our proof!”.

Children who then grew up and who stopped believing in God, specifically because of this and things like it, now saying; “Evolution just makes more sense to me”.

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