What is the significance of the Jacoby Rule in backgammon and how does it impact gameplay strategy?

The Jacoby Rule in backgammon states that gammons and backgammons do not count if neither player has doubled during the game. This rule encourages players to be more aggressive in doubling, as it can increase the value of a win. It impacts gameplay strategy by incentivizing players to double early in the game to maximize their potential score.