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The story of Aladdin's Lamp is really like the story/running joke of a Genie stuck in a bottle. Now the fixed star Algol is about how the Genie got stuck in the bottle in the first place. The clue is how to 'charm' the Genie out of the bottle, whether by flute (ie the snake-charmer) or the wave of a hand (ie the rubbing of a lamp).
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