The conversation between human and AI assistant.
How does the Berglas Effect magic card trick work?
How is it possible to know the chosen card without any force or manipulation?
The trick involves the use of two decks of cards, one prepared and one ordinary. The magician surreptitiously switches the decks and then forces the chosen card from the prepared deck. The spectator is then shown the face of the chosen card from the ordinary deck, making it appear as though the chosen card was freely selected.