Why R Old Books Better Than New?

1 We can read there true information, but now information is changed))and we can only choose: To believe or not2 Many authors use different sources to write a book, one told the second, second told the third, the third told the fourth...and if someone tells the information he can change it if he wants..so when this information is got to the 'author of a book' it becomes wrong))                                                                                           But I can't say it about all books. But in the most cases it is like that.