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In 2014, a Quora user asked Justine Musk if determination alone could make them a billionaire. Her answer? “No.” "Not because ambition doesn’t matter — but because the question itself is wrong. “You’re determined. So what?” she wrote. “You haven’t been racing naked through shark-infested waters yet.” She pushed the idea further: Will you still be determined when you’re washed up on a deserted island — disoriented, bleeding, exhausted, staring at the horizon with no sign of rescue? That’s when de