A question from a club-mate who has just wintered in Australia playing for North Melbourne appeared on Facebook.
He is totally perplexed by the Duckworth/Lewis system.
I sent a reply telling Anthony (Parson), that I had met Tony Lewis @ our club on a weekday when the U'15s World Cup was being held in Berkshire.
Mr. Lewis spent a quarter of an hour explaining his system to me during the game between South Africa and Sri Lanka.
Ironically, after the South African innings, it hammered down with rain during Sri Lanka's innings.
For D/L method to be effective in a 50 over innings game, 20 overs of the return innings must be completed. As it happened only about 3 overs had been played before the deluge descended.
The game is then abandoned with points shared, I believe.