How tunnel vision can hijack a successful pr…

When I first started at Google, I thought the role of a product manager was simply to define the product vision and then work with my team to execute on it. I realized soon after that the most effective managers do not simply think of products and then launch -- at their core, what effective product managers do that newer PMs do not do, is that they think of setting the right hypothesis as the most important step, and organize their time testing it well.

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