 So, when you're thinking about science, we need to understand that there exists a method for doing that. And the scientific method, it's based on having a specific question, this specific question, from this specific question, you design a hypothesis. The hypothesis is what you believe that is true. And to test if that is that your hypothesis is right, you need to do essays, those where we call experiments. And a hypothesis, combining with the data generating for those disasters and these experimentations, can tell you if your hypothesis is true or if it's false. And if it's true, you can move forward and go for the next question you have and create new hypotheses. If it's not, you need to do some extra essays to try to understand where your hypothesis was wrong and you can reformulate that to really achieve the main goal of understanding and establish the new knowledge.