That populations change with respect to heritable characteristics over generational time for one.
You mean that populations of kinds diverge into different appearances, yet still remain the same kind. That cats diverge into a variety of appearences, but are still felines. I agree, kind after kind.
That statement would have more weight if anyone had the cojones to define "kind", in any case, taken in broad terms, this observation is just what evolution predicts. Tetrapods after tetrapods, eukaryotes after eukaryotes....
Your argument might be worthwhile if you stopped refusing to accept the definition of kind I have given close to 28 times already.
All felines are one kind, what is your problem with understanding that?
Don't blame me for your failures.
I am not, I am blaming you for your failures of being unable to define what a species is.
That populations change with respect to heritable characteristics over generational time is as well demonstrated as any other scientific theory.
Agreed, kind after kind with appearance changes, exactly as we have observed. You have never observed a feline become anything but another feline. You have never observed anything become anything else.
That this theory explains a large suite of facts like the multiple matching nested hierarchies and biogeography and fossil succession and morphological and genetic homology and how speciation occurs and why species are adapted to environments is how we know it's useful we'll demonstrated science.
That it has shown kind after kind is undisputed, I agree. So why are you arguing against your very own science which has proved beyond doubt that cats never become anything but cats?
Almost every single mutation is harmful, and the gene itself has safeguards to protect itself from mutations. Not my fault you need a proven harmful state to change an animal into another kind because you can't accept the truth.
Mutation - Wikipedia, the free encyclopedia
Mutation can result in several different types of change in sequences, Mutations in genes can either have no effect, alter the product of a gene, or prevent the gene from functioning properly or completely. Mutations can also occur in nongenic regions. One study on genetic variations between different species of Drosophila suggests that if a mutation changes a protein produced by a gene, the result is likely to be harmful, with an estimated 70 percent of amino acid polymorphisms having damaging effects, and the remainder being either neutral or weakly beneficial. Due to the damaging effects that mutations can have on genes, organisms have mechanisms such as DNA repair to prevent or correct (revert the mutated sequence back to its original state) mutations.
The truth that you at no time have ever observed a single creature evolve into something other than what it originally was. Ever! You have not a single genetic test to show that any creature has ever become another creature. It has always been kind after kind, will always be kind after kind.
This is a scientifically proven fact that I accept, why can you not accept what your very own science is telling you? Not someone's interpretation and twisting of the data, but the cold hard facts that every single cat, no matter its appearance, is a cat and has always been a cat. That every single mutation science has caused in an animal or human has been harmful. That mutations in nature die, and do not pass their genes on to the next generation. That adaptation of form, not genetic structure is all that you have ever observed.
This is how we know we are humans, cats are cats, dogs are dogs, whales are whales, and fish are fish. Just as birds are birds, and apes are apes. Kind after kind, always has been, always will be.