The Half Game Rule was introduced to ensure all players received enough playing time and in doing so had the opportunity to develop their skills.
Why are First XV teams exempt from the Half Game Rule?
The Half Game Rule doesn't apply to First XV teams because the players in these teams will have developed their game to a high level and the playing schedule of these teams often mean that the full squad will receive adequate game time during the season.
Why was the Half Game Rule introduced?
The Half Game Rule was introduced to ensure all players received enough playing time and in doing so had the opportunity to develop their skills and stay motivated to play rugby in future seasons.