The Scenario
 Two paper bags are lying on a table. One of them has the word “HEADS” written in large letters, the other “TAILS.” The magician enters the stage…
 “Chance is a word invented by ignorance.”
 Then he approaches a spectator and gives him an old silver coin.
 “In your opinion, sir, is this side heads or tails?”
 - " Stack."
 “And the other side?”
 - “Face.”
 “If the coin lands on tails, I will crush the 'TAILS' bag with my hand. If the coin lands on heads, I will crush the bag...”
 The magician takes the coin. He throws it, making it spin like a top. As it spins on the floor, he takes off his jacket, rolls up his sleeves, and stands behind the two bags. The coin stops moving...
 “Sir, come closer to the room and tell us what the room has decided.”
 - “Heads!”
 The magician, looking slightly doubtful, approaches the coin and checks. "Heads," he confirms. He returns to the bags and, after a moment's hesitation, crushes the "HEADS" bag with his hand. The bag appears to be empty.
 “Coincidence or not, you be the judge,” he continues. Then he lifts the other bag to reveal that it contains a large, sharp knife, point upwards...