Evolution - Fact and Fiction

Evolutionist believes that evolution is both a fact and a theory. The quote below taken from this website gave a very clear explanation:

QUOTE
Evolution--the process by which the genetic composition of a population changes over time--is a FACT.

• This process is all that is required to produce the diversity and similarity of all life on this planet today.
• Evolution has occurred; it still is occurring; it has been directly observed, documented, demonstrated, and described. Supporting evidence for it is overwhelming (and obtained from a wide range of scientific fields).

The mechanisms by which evolution occurs (e.g., natural selection, mutation, genetic drift) are presented as SCIENTIFIC THEORIES.

• Several theories have been proposed and debated. It is far from clear how evolution proceeds in every detail.

In summary, Darwin established the FACT of evolution, and proposed a THEORY, natural selection, to explain the mechanism of evolution.
UNQUOTE

Changes in species due to natural selection, mutation, genetic drift are obvious. In fact, humans used these to create many varieties of domestic animals and plants. However, the current observation of evolution process has always been confined within the species. The evolutionist's answer is that nobody lives long enough to observe evolution beyond a species. But given enough time, a microbe can become a human. Exactly how that can happen is the THEORY of Evolution.

Creationist called the observed facts of evolution microevolution, and the theory that all life forms basically descended from some microbes macroevolution. Microevolution is a fact, but macroevolution is fiction.