“As Facebook’s Mark Zuckerberg said in 2017, “Optimists tend to be successful, and pessimists tend to be right. . . . If you think that something’s going to be terrible and it’s going to fail, then you’re going to look for the data points that prove you right. And you’ll find them. That’s what pessimists do. . . . But if you think that something is possible, then you’re going to try to find a way to make it work.”