Building a successful company requires a balance of left and right brain thinking. It's important to find people with a relentless work ethic and unwavering self-belief, but also those who understand the economics of their idea. Experienced entrepreneurs with good founder market fit are ideal partners. To build efficiently, it's important to optimize time and structure production. When entering a new culture, it's important to come in with some best guesses and then test those assumptions. It's also important to observe the culture and play by those rules. Having a cultural frame in mind can help explain why people behave in certain ways.