Over the past four years, Lucas Joppa, Microsoft Corp.’s 37-year-old chief environmental officer, has dislocated and broken one shoulder, separated the other one, broken his right wrist, and also broken his left thumb. In early May he was pretty sure his right thumb was broken, but his hand surgeon said it was a torn ligament. It’s not that he’s clumsy or reckless—he calculates that, given the amount of time he spends on a bike or skis, his “error rate” is about 0.08%—it’s just that he has a tendency not to look before he jumps.
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