As I walked out of the cinema hall after watching Sachin: A Billion Dreams, I wondered: Would I have thought differently of this biopic had I not known anything about the person it is based on? James Erskine’s documentary on one of the most celebrated cricketers in the world – one who has achieved a near-deific status in India – went along expected lines.

But was that because I, like many Indians and cricket followers around the world, already knew so much about Sachin Tendulkar? How would someone living under a rock for the last quarter of a century, and did not ...