Key to evaluating the evidence of evolution is the distinction between macro and microevolution. Creationists don't dispute microevolution, the observation that species adapt to their environment. Yet biology textbooks cite examples of microevolution to make macroevolutionary conclusions: microevolution leads to speciation, or totally new species. Transitional fossils, the proof that Darwin insisted would prove or disprove his theory, are "extremely" rare, and persists as "the trade secret of paleontology. Supporters of evolution have significantly modified Darwin's theory, making it virtually untestable and unverifiable, an approach that is unscientific.
