Design: The Journey Of A Billion Customers Starts With One Individual User

I always learn something from Jack Dorsey:

Dorsey is also talking about the process of making a business. He sees not the devil, but the humanity, in the details, particularly for his customers. “If we can perfect one experience for one individual, we can scale to every single one of the 7 billion people now inhabiting this earth,” he says.

This is from a nice profile of Dorsey and Square in Fast Company.