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A young girl stands at a crossroads. One path leads to safety, the other to a dead end. On each path, a stone is engraved with a word: "truth" or "lie." There are no further instructions, and she doesn't know who to ask for advice. The solution is actually very simple: she must choose the path marked "lie." Indeed, if this stone points in the wrong direction, the other, the one marked "truth," will lead you directly to safety. A logic game based on contradiction!
The Mystery of the Vanished Umbrella
A man places his umbrella against a bench, and within minutes, it disappears without anyone approaching. Yet the bench is in an open space, with no possible hiding place. The mystery seems incomprehensible. And yet, the solution is quite simple: a gust of wind has blown the umbrella away, without the man noticing. This apparent disappearance, which one might think suspicious, is in fact the work of nature. The closed room: an illusion to be thwarted
Imagine yourself locked in a windowless room with only one locked door. A key is lying on the floor, but it doesn't seem to fit the lock. How do you get out? The key is useless here, because the real trap is the lock itself. In reality, the door isn't locked! The decorative lock only creates the illusion of impossibility. All you have to do is push the door open to escape. Sometimes, simplicity is the key.
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