Replies

Yep. Whales evolved from primitive land whales (aka pakiceti) that looked something like this:

What proof do we have that a species can make a dramatic change into a completely different species over any period of time, no matter how long? Will you point to laboratory fruit flies in which scientist have produced changes in a multitude of characteristics? They're still just fruit flies. Let’s suppose that a supreme world leader comes to power and declares that all blond haired people must be put to death, and that any new offspring with blond hair also be killed. After several generations, humans would all be born with hair some color other than blond. Does that mean that as a species we evolved into something different? No more so than the finches on Galapagos Island evolved. The birds with the smallest beaks simply couldn’t eat the large seeds necessary for them to survive. Therefore, as a species the only survivors were the finches with large beaks.

The question is not whether natural selection occurs. Of course it does, and it has an effect in maintaining the genetic fitness of a population. Creatures with severe birth defects do not survive to maturity and creatures which do not survive to reproduce do not leave descendants. These effects are unquestioned, but you assert a great deal more than natural attrition among the genetically unfit. Your theory claims that this same force of attrition has a building effect so powerful that it can begin with a bacterial cell and gradually craft its descendants over billions of years to produce such wonders as trees, flowers, ants, birds, and humans. Bullsh*t.