1. OBSERVATION
2. EXPERIMENTATION
3. REPRODUCTION
4. FALSIFICATION
Since you subscribe to the Scientific Method you cannot take Old Earth/Macroevolution as fact.
To believe Old Earth/Macroevolution is to have faith in Science and Scientist. To overlook all the flaws and to ignore evidence that opposes the "facts" you want. It is to have faith in the powers of man to know all, though he does not know what he does not know.
This is addressed in point three of the lead article for this thread:
3. Evolution is unscientific, because it is not testable or falsifiable. It makes claims about events that were not observed and can never be re-created.I suggest you read the article's rebuttal.