The Thought (K)not tangles with your mind and is indestructible by force. Solve it with your fingers, pay in knotted thoughts.
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If you unknot these thoughts, the tangles will find their way into the twine again. Cheating is impossible. But that makes the knot useful.
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With the right finger movements, you can braid your thoughts or truss up secrets so tightly that nobody can extract them from you.
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