" How Musk chooses which streams to explore depends on the relationship between those probabilities and the importance of his objective. “Even if the probability for success is fairly low, if the objective is really important, it’s still worth doing. Conversely, if the objective is less important, then the probability needs to be much greater. How I decide which projects to take on depends on probability multiplied by the importance of the objective. "

― Peter H. Diamandis , Bold: How to Go Big, Create Wealth and Impact the World