Hi Faith,
If it is so hard to know about the "unwitnessed" past ,then it should be easy for you ,or anyone, to show where RAZD's Correlation thread goes wrong. So why has no one done so? In the debate with Mindspawn, once the evidence became apparently unanswerable, Mindspawn disappeared.
Why don't you have a go at disproving the ice core counts of tens of thousands of years? They are checked by several different means to confirm the counts are annual, and can show deposits of known volcanic eruptions where expected in the count, and ditto for lead at the times human used it.
The Greenland Ice Core Chronology 2005 studied 5700 metres of three cores in concluding they showed 60,000 years, with the testing including 180,000 isotope and 1,000,000 chemical measurements, so there is plenty of scope for showing where they got it wrong.