"The principles of forensic science are phenomena which can be tested and experimentally verified in the lab."
The principles of evolution can be tested against observations such as fossils, and experimentally in the lab via genetic comparisons.
"There may be some uncertainty in application of those principles, but the science is not based on a story than no man has ever seen."
Forensics tells a story of how a person murdered another person when no man was there to see it. This is based on empirical evidence.
Evolution tells a story of how life changed over time when no man was there to see it. This is based on empirical evidence.
Geology tells a story of how the earth has changed over time when no man was there to see it. Also based on empirical evidence.
Same goes for cosmology, and continental drift. Science is not limited to direct observation.
The hoaxed Piltdown Man was a part of their "proof" in the past. "He" remained for decades.
But all those observations fail to point to the evolutionary theory as the exclusive valid explanation. All those observations are just as supportive of the idea that God created in six days and created life to multiply after their kind.