I have never understood the evolutionists logic:
- Creationism is anti-science because its not observable (couldn't agree more), but -
- Evolution is science.
However, evolution has never been observed.
Have you observed 'humans' evolve from a ''common ancestor''?
No large scale phenotypic change has ever been observed.
So why do evolutionists oppose creationism when they believe in things themselves which are not observable?
I think there may be a misunderstanding about the definition of "observable".
Let me use a hypothetical crime as an example. A victim was found dead from a gunshot wound, and some time afterwards the police identify a suspect. During the course of the trial the following information emerges: the bullet used to kill the victim was identified as registered to the suspect. The suspect owns a gun capable of firing the kind of bullet that killed the victim, and was shown to have been fired recently. Witnesses saw the suspect arriving at and leaving the crime scene at approximately the time of death. Traces of the victim's blood were found splattered on the suspect's clothing. A strong motive for the crime was established: a diamond ring belonging to the victim, also containing traces of the victim's blood, found in the suspect's possession.
There was no direct observation that the suspect shot the victim. But I hope you understand what I'm trying to explain. As far as the theory of common descent goes, we have comparisons of the genetic sequence of organisms revealing that organisms that are phylogenetically close have a higher degree of sequence similarity than organisms that are phylogenetically distant. We have genetic detritus such as pseudogenes: regions of DNA that are orthologous to a gene in a related organism, but are no longer active and appear to be undergoing a steady process of degeneration. Fossils allow for the comparative study of the anatomy of groups of animals which in turn show structural features that are fundamentally similar or homologous, demonstrating phylogenetic and ancestral relationships with other organisms, most especially when compared with fossils of ancient extinct organisms. Vestigial structures and comparisons in embryonic development contribute to anatomical resemblance. Comparison of existing organisms' physiology and biochemistry reveal that many lineages diverged at different stages of development, so it is possible to determine when certain metabolic processes appeared by comparing the traits of the descendants of a common ancestor. Universal biochemical organization and molecular variance patterns in all organisms also show a direct correlation with common descent.
Further evidence comes from the field of biogeography because evolution with common descent provides the best and most thorough explanation for a variety of facts concerning the geographical distribution of plants and animals across the world. This is especially obvious in the field of island biogeography. Combined with the theory of plate tectonics common descent provides a way to combine facts about the current distribution of species with evidence from the fossil record to provide a logically consistent explanation of how the distribution of living organisms has changed over time. Comparative sequence analysis, especially phylogenetic reconstruction using slowly-evolving protein sequences, reveals the relationship between the DNA sequences of different species, producing several lines of evidence that confirm Darwin's original hypothesis of common descent. And so on and so forth.
We have knowledge of Mendel's law of hereditary genetics, genetic drift, mutation, macroevolution, and how selection forces can and do produce phenotypical changes. We can and have duplicated these under laboratory conditions. We have evidence that all of this has been happening for hundreds of millions of years, with fossilized remains in perfectly-ordered geological strata showing us that small changes over long periods of time add up to, well, big changes (which should be obvious). And so on and so forth.
I hope you understand what I'm trying to get at. Although direct observation (in this case, of the above facts such as biogenetics, genetic sequencing, fossils, comparative anatomy, biogeography etc) forms the basis of science, science is and has never been limited to only what we can directly observe. Creation accounts, on the other hand, provide neither a well-researched, well-evidenced theory, nor any underlying observable facts to support it. While scientists have invested vast amounts of time, money, and effort researching their theories, and then turning around and
trying their best to prove their own theories wrong just to be sure they got it right, the only proof offered by creationists are arguments from ignorance and emotion (yes, as strange as it sounds, it's the scientists who've been sinking large amounts of time and money trying to tear down their own theories, instead of the creationists).
I hope the difference in thinking between evolutionists and creationists are clearer now.