The classic card force is a technique used in magic to make it seem like a spectator has a free choice of a card, while the magician secretly controls the outcome. This method often involves a simple shuffle or cut of the deck, leading the spectator to select a specific card predetermined by the magician. In this technique, the magician may use misdirection or subtle cues to guide the spectator's choice. The goal is to create the illusion of randomness, while the magician ensures that the chosen card is the one they intended, enhancing the overall effect of the performance.