One of the first things taught in biology is the classification of living things. The systems used today place every species into nested groups according to similarities and differences in anatomy...
One of the first things taught in biology is the classification of living things. The systems used today place every species into nested groups according to similarities and differences in anatomy. Do these relationships make more sense when working from within an evolutionary paradigm, or from within a special creation paradigm?
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I noticed a small error. He states that all mammals have internal gestation, which is not correct. Placentals and marsupials have internal gestation, as he states, but the monotremes are mammals that lay eggs. Overlooking these is not surprising, as there are only 2 or 3 monotreme species left.
you said that animals like dolphins show signs of once having ancestors with legs. No. wrong. fail. they use those "useless" skeletal attachments in mating.
I never said they were useless. But they are clerly vestiges of legs. This can be confirmed by identifying the genes. In some cases, these genes are reactivated and develop a more complete complete set of legs. You are basically saying that a broken stapler used as a paper weight doesn't mean that it once a stapler. Wrong!
If you find a old PC, like a radio-shack TRS-80, being used as a doorstop, only a fool would think it was designed for that purpose. Since we can show that similar designs, which are functional, are used to perform other (primary) functions, like computing, we can safely say that the broken machine is not optimized for holding doors open. It is simply being used because it can no longer serve its original function. This is the case with anatomical and molecular vestiges.
One again, your metaphor is invalid based on the assumption that machine is "broken" or somehow inferior. Is procreation an inferior purpose than walking? Further more, you are assuming that that was it's original purpose, simply because the bone looks similar.
And because the genes are similar, and because cetaceans have thousands of olefactory genes even though they have no sense of smell, and because the evolution of artiodactyls to cetacean is well documented in the fossil record, even the nostril to blowhole and air to water hearing transitions, and because marine mammals have hair follicles that no longer produce hair, and because when they swim, they move their spine up and down using muscle groups analogous to running mammals, and because...
The common design vs. common descent analogy using automobiles is excellent. However, this argument seems to break down somewhat when we take it to the cellular level within biology.
I think the automobiles analogy may fail because its variation of the same "kind" (automodiles). Sorry for the not so scientific terminology. What would happen if you did the "common design vs. common descent" analogy with a broader category like electric kitchen appliances? -Coffee grinders, blenders, food processors -Convection Oven, toaster, microwave -coffee maker -etc. ?
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I'm curious to know exactly what you mean regarding the cellular level though.
-Coffee grinders, blenders, food processors
-Convection Oven, toaster, microwave
-coffee maker
-etc.
?