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But the chair beneath you probably rolled a couple of meters away from the table, didn't it? :)
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LOL... that's not an earthquake... that's someone stealing your chair 🤣

Things slide, but often come to the same place. Usually its like 5-10 cm if its a big jolt.

Well, yes, I should have taken that into account; the chair might have shifted a few centimeters relative to the floor, but the foundation of the house and the floor itself shifted about three meters relative to their previous position. :)
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