Let's study ID: giraffe plumbing (Introduction)

by dhw, Sunday, September 19, 2021, 08:41 (331 days ago) @ David Turell

Giraffe plumbing

QUOTE: Evolution has developed a twofold solution. Giraffes have sprouted a network of arteries in their necks that can expand to accommodate more blood when they bend over. As well, their jugular veins have acquired a muscular layer to squeeze blood back to their hearts, and an intricate series of valves to prevent backward flow.

DAVID: I've mentioned most of this before. There is no way this can be developed stepwise. It must be designed. And as in all fossil gap stories, no precursors.

Apparently fossils are rare,but there are enough to piece together the evolution of the species.

How Giraffes Evolved Such a Large Neck - This View Of Life

QUOTES: The evolutionary history of the giraffe brings us back to approximately 50 million years ago. An animal similar to antelopes evolved into two species that are extant today. Many of these animals roamed across Eurasia and Africa until they went extinct or evolved into animals we see today. These surviving members of the Giraffidae family are the okapi and the giraffe, both of which (Whom?) inhabit Africa. Many other extinct predecessors of the giraffe existed, and their fossils remain. By using these fossils scientists were able to figure out how their necks evolved anatomically.

[…] If we compare vertebrae of the modern giraffe to its extinct ancestors we can begin to see when and where this elongation began to take place.

I have no idea why you discount a stepwise development, since every ancestor of every species must have survived until it changed its form. Since you believe in common descent, your theory is presumably that your God preprogrammed the development of the long neck 3.8 billion years ago, along with every other innovation and strategy [see the opossum article], or popped in to perform operations on each successive ancestor (and we shouldn’t forget that according to you, every step was “part of the goal of evolving [= designing] humans” and their food). An alternative might be that the intelligent cell communities of each ancestor produced the changes in response to conditions which made long necks an aid to survival. (And of course cellular intelligence may have been designed by your God.)

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