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"All passengers, will you[1] pay attention, please? " All the high-fidelity speakers of the starship _Procyon_ spoke as one, in the skillfully-modulated voice of the trained announcer. "This is the fourth and last cautionary announcement. Any who are not seated will seat themselves at once. Prepare for take-off acceleration of one and one-half gravities; that is, everyone will weigh one-half again as much as his normal Earth weight for about fifteen minutes. We lift in twenty seconds; I will count down the final five seconds. Five. Four. Three. Two. One. Lift!"
The immense vessel rose from her berth; slowly at first, but with ever-increasing velocity; and in the main lounge, where many of the passengers had gathered to watch the dwindling Earth, no one moved for the first five minutes. Then a girl stood up.