evolution vs. creationism: evolution wins

I was just on a taxonomy lab wbsite and it talked about creativity and said that the rules for classifying are by no means settled. Does this mean that anything goes, or is that site in error?

No, I was reading about experiments that were designed to see if there were limits. One involved paramecium selected for physical size. After a certain point a limit was reached and they would not continue to increase in size. Another involved fruit flies bred to decrease the number of hairs on their thorax. They were able to greatly reduce the number of hairs, but not eliminate them entirely.

But lions and tigers can breed. What am I missing now? Didn't someone state that the ability to breed was one of the defining factors determining species? Yes, I think they are all cats.I meant that there are limits to the species ability to change.Their descendants could never grow flippers and become dolphin like creatures because there is no dna in them that would provide that information. And a million mutations couldn't funish the new information needed for flippers.Yes I know that animal breeding is not natural selection, but it shows that important genetic information is lost, not gained in new sub species. Domestic animals are a valid example in that context.I will look up those experiments.

I can reference the paramecium experiment to Herbert Spencer Jennings,at the Museum of Comparative Zoology at Harvard, in the 1940's. He was the world authority at the time on the behaviour of microscopic organisms.The defining limit is the information in the dna. No new information is gained by mutations, the information present is corrupted. I liken it to misspelling words on a page, one or two misplaced letters may not be a problem, but enough wrong ones and it is meaningless.As to dogs, my thought, admittedly not clearly expressed at the time, was that if they are bred any smaller they will vanish. There will always be new breeds of dogs, but they are fairly predictable as to what they will be: dogs.

I thought that biological species were species that had the ability to breed. I shall do more studying, and provide adequate arguments for those assertions before making any more posts.