`  == Holy Grail ==  Some commentators claim that Wolfram's Parzival dates from decades after Chretien's Perceval, while yet other commentators think that the works are contemporary. Like I said previously, the subject matter is an area where the beginners stray in at their peril. Nothing is ``simple`` about this subject matter (because of the uncertainty over dates and the different takes offered by the various authors) and it is no good trying to convey otherwise.   `