As you can see, you brought up forensics as part of proving past history. If we can’t solve something as simple as who robbed the store on the corner or who killed a random victim, what does that say for real mysteries of the past, particularly pre-history?
Who built stonehenge? What happened on Easter Island? Where is Atlantis? What happened to the bones of the giants found worldwide? Who killed the dragons? Why have we never observed evolution in all of recorded history? And why do so many ancient structures look like they were built with modern tools?