Venture capitalist Keith Rabois set off a Silicon Valley firestorm earlier this month about what it takes to succeed. When another tech investor wrote on Twitter that working on the weekends and burning out isn’t cool—and doesn’t work—Rabois fired back. “Totally false,” he said, suggesting that dogged dedication (usually measured by long hours) was the only way to reach the top. Lots of people objected to his assessment. Francesca and Rebecca speak with one of Keith's critics, startup founder and engineer Sara Mauskopf, about why she thinks flexible hours and a healthy work-life balance can actually make your product better. Then we check in with Keith to see whether he has revised his opinion.

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