Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
know what is true religion. quran tells how a human being must lead this life and to be in good path. i have seen many friends talking without knowing about other religion. know what is there. there is no point in criticizing and saying bad about others..