This document discusses the conflict between creationist and naturalistic views of evolution. It outlines how natural selection is proposed to drive evolution but may have difficulties explaining the development of complex biological systems with many interdependent parts. The document examines examples of such complex systems, like the human muscular system, watches, and burglar alarms. It notes that natural selection can eliminate less fit variations but may not be able to build entirely new complex systems gradually. The document questions whether fossils provide evidence of the major evolutionary changes proposed to have occurred between different taxonomic groups.