Rachel Finn

At first, I was stunned. When I thought of culture, I thought of big mission statements and values, like our emphasis on innovation. Or our social traditions — like Friday afternoon beer bash, or tossing the newly affianced into the campus fishpond. I didn’t think of responsiveness to email.

When all the “successful” people behave in the same way, culture is made. At Facebook, “data driven” was a critical value, and across the board, Facebook leaders uniformly …