One night last month, while I was lazily channel-surfing at home, I happened on shot-putters doing their thing at the IAAF's World Athletics Championships in Osaka.

As tiring as it was to watch, there was something truly moving and amazing about all those beefy men puffing out their cheeks, spinning around at incredible speed and then roaring fearsomely as they launched their black steel balls far down the field.

But a question came into my mind, and it quite disturbed my TV torpor.