 are using this tool to advance their continent. But if I can push a little bit further, when there is a COVID, for example, there is a breakout of a specific disease, what is the role of a mathematician? The first thing, the guy will observe what is happening and he collects some data. After he collects those data, he's going to build a mathematical model. When he builds that mathematical model, he solves the mathematical model and he compares the data that he collected. If there is an agreement, he will be able to predict what will happen in the future.