At this point it is important to understand the terms microevolution and macroevolution. Microevolution can be defined as evolution resulting from small specific genetic changes within a species. These variations occur within each class and no member of any defined class could stray beyond the confines of its type in terms of its basic, defined characteristics. This type of minor variation is what is expected by Darwin’s special theory and is not disputed by creationists.
Macroevolution can be defined as evolution on a large scale resulting in the formation of new taxonomic groups and the crossing of the immutable barriers described by typologists before the advent of Darwinism (refer to Biochemistry page for more info on typology). Macroevolution is what is expected with Darwin’s general theory. It is the extrapolation of the conservative changes seen in microevolution into major changes if given huge amounts of time. Darwin stated, and most evolutionists today admit, that the length of time necessary for this supposed macroevolution by natural selection to occur would have to be very, very great.
It is important to note that evolutionists today, when asked for proof of evolution, continue to produce evidence for microevolution. When they do so, they try to pile on as much of this microevolutionary evidence as possible, usually with a condescending tone, to imply that you must be ignorant if you try to dispute all the evidence.
But as I have stated, creationists do not dispute that microevolution does take place. Why would we be surprised that God created living beings with the ability to adapt to their environment in order to better survive? The problem is the assumed extrapolation to macroevolution, for which there is absolutely zero evidence. This is the basis for the belief that all creatures evolved from some primitive life form, and the foundation of evolutionary theory. Yet it is only an assumption for which there is no evidence, and actually very much contradictory evidence, as we shall see.
There is no doubt that as far as his “general theory” and its macroevolutionary claims were concerned, Darwin’s central problem in the Origin lay in the fact that he had absolutely no direct empirical evidence. He could produce no clear-cut intermediates to show that evolution on a major scale had ever occurred and that any of the major divisions of nature had been crossed gradually through a sequence of transitional forms. Not only was he unable to provide empirical evidence in the existence of intermediate forms, there was, and is, a real difficulty in even imagining the hypothetical pathways through which evolution may have occurred.
The only explanation Darwin was able to offer in the Origin for the lack of intermediates was his appeal to the ‘extreme imperfection’ of the fossil record, a subject we will cover in the Fossil Record page. But this was largely a circular argument because the only significant evidence he was able to provide for its ‘extreme imperfection’ was the very absence of the intermediates that he sought to explain. And as we will see in the fossil chapter, in the 160+ years since Darwin, and with a huge number of discovered fossils in all that time, nothing has changed !