There&rsquos a new &lsquoIndia&rsquo book out in the shops practically every month. Each supposedly epic in sweep &mdash covering the gamut from the exotic to the economic. Each attempting to pin down this &lsquoancient behemoth poised on the brink of global greatness&rsquo or some variation on that theme. Most of these are packaged as coffee-table books &mdash somewhat repetitive images of the ghats of Benaras with exaggerated extended captions.