The newcomer can weigh a kilogram 60-70. A cabin director is far from a hundred. Guess who's going to shake up?
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I easily guess. I remember once in my childhood I watched on TV "superpower competitions". For a while they dragged sandwiches with some sealed cargo. In the end, it was twice as fast as everybody. And not because he was the heck, but because the only physics in the school did not walk.