India, April 26 -- Most of the communities, perhaps periodically, recall their glorious past in order to show their grandeur. In other cases a narrative is created of the ethnic greatness. Still on other occasions some virtue is picked and held out as an ideal where other communities should be aspiring to arrive. The list is endless. It is commonly believed by people globally that when the sun rose for the first time, the rays had fallen on their city first. It's hard to counter such sentiments as they are often rooted in mythologies. However, if such mythologies are scientifically analysed, the psychology of communities could be far better understood. On the other hand, the history of nation-building (which is essentially a post-19th cen...