As there was no printing press during the period between 700 and 1750, Scribes used to copy down the manuscripts which were hand-written. Sometimes it was difficult to recognize the original script. So the Scribes used their own way of interpreting the facts. Consequently, there were differences were found in the copies written by different Scribes. As all the copies were handwritten, it was difficult to recognize which was the original one. It was the drawback of such copying.