How were new techniques introduced by the subcontinental teams?

(i) Innovations in cricket techniques in recent years have mainly come from the practice of subcontinental teams in countries like India, Pakistan and Sri Lanka. Pakistan has pioneered t’n o great advances in bowling ‘doosra’ and the ‘reverse swing’.
(ii) Both skills were developed in response to the subcontinental conditions; the doosra to counter aggressive batsmen with heavy modern bats who were threatening to make finger-spin obsolete and ‘reverse swing’ to move the ball in on dusty, unresponsive wickets under the clear skies.
(iii) Initially, both innovations were greeted with great suspicion by countries like Britain and Australia, which saw them as an underhanded, illegal bending of the laws of cricket.
(iv) Later, it was accepted that the laws of cricket could not continue to be framed for British or Australian conditions of play and they became paly of the technique of all bowlers, everywhere in the world.