The One Rule That Makes Elon Musk Rich

And will make you just as smart.

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Let’s take it back to 2002. Ebay buys PayPal for $1.5 billion, making Elon Musk — the majority shareholder of PayPal — $180 million richer. A friend asks what he wants to do with all that money and Musk says he wants to go to space. He grew up devouring science fiction, launched model rockets from the lawn of his elite South African high…