The Osmond Brothers got it wrong. One bad apple CAN spoil the whole darn bunch. And that’s especially true in the startup world. A negative and selfish employee can start a contagion throughout the company, causing other employees to act the same way and sucking up more of management’s time, says Stanford Professor and author Bob Sutton in this entrepreneur thought leader lecture given at Stanford University. Reforming those bad apples is possible, but there comes a point where you have to cut your losses.

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