We can only guess to reveal the truth in many cases of History. similar to the viriginity issue of Mother mary, Jesus walking on water. ( approx. 2050 years back).
Quran directly came from heaven and not written (Approx. 1500 years back !)
Hindu Vedas and Puranas ( Approx. 10 thousand years back)
Monkeys got converted to today MAN in due course of time. the in between stage where he was half monkey and half man was the stage described as Monkeys in ramayana. ( 1 with brain of Man and strength of a APE )
