Its very simple,the great council of JEDI....just influenced his mind(only authorised by great council) to help promote the life and history of the JEDI.... its part of the JHPP(JEDI HISTORY AND PROMOTION PROGRAM) and G.Lucas was asked to made a documentary on the JEDI.....so what you have seen was not imaginary but rather facts which were alter to a certain extent(minimum) to made it more understanable for human beings on earth!!!