Anyone hailing from kolkata would know how well does a ramshakle Bus double as rocking cradle to numberless office-goers...even today when my car moves next to any packed bus, I make an effort to stick my head out to see stooped heads swaying in rhyme with the moving bus on some bumpy road. The engine's sonorous rumble sings the lullaby and the rickety seats rock them to a shortlived yet consummate sleep. This sight inspires a host of philosophical thoughts.