The great English physicist Isaac Newton famously described gravity by stating, "What goes up, must come down" after watching the fall of an apple from a tree, or at least that's what we're told in his biography written by one of his contemporaries, William Stukeley.
Perhaps if Newton lived today and had an addiction for dashcam videos, he may have come to the same conclusion simply by observing Russians driving on steep roads during the winter season.
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