Human history follows a 150 yrs(1857 A.D.to 2012 A.D.) repetitive pattern.So may be after next 300 yrs,human history period between 1857 A.D. & 2012 A.D.will be HEARD like hindu ashtadasa purana.

My social research is that INFORMATION SYSTEM/S CAN BE LIKE HUMAN BIOLOGICAL SYSTEM/S WHICH WORK UNDER SOCIAL MEMORY/PSYCHOLOGY.