The three body problem is a problem in physics, where physicists realized that once you were trying to calculate the orbits of more than two celestial bodies. And then since then, all sorts of mathematicians, economists in every field have showed it's extremely difficult to predict what the future is going to be. Yet this is superinteresting becase it applies to basically everything. Even the world's best experts only have a 20 % success rate. That means it's better to run experiments with this open mind, that you have a hypothesis. You run the experiment, you could be wrong. If you're wrong, adjust your hypothesis and adjust the experiments. This can apply to literally everything from start-ups