Knowing the "correct play" according to basic strategy is crucial for maximizing a player's chances of winning in blackjack. Basic strategy provides a mathematically optimal approach to decision-making based on the player's hand and the dealer's upcard. By following these guidelines, players can minimize the house edge and make informed choices about when to hit, stand, double down, or split. Understanding the correct play also helps players avoid costly mistakes that could arise from emotional decisions or misconceptions about the game.