Statistical and astronomical analysis of Ptolemy's Almagest (A.T.Fomenko, V.V.Kalashnikov, G.V.Nosovski) proves that the date of the compiling of the star catalogue in the Almagest belongs to the time interval 600-1300 A.D. This fact contradicts the standard date of the creation of the Almagest: 2nd century A.D. How is it possible?