 Everything we do is using mathematics. Of course, that even our communication, you set a time, you told me we need to meet here at three o'clock. You know, everything is almost mathematics. So it is very important. You will see that developed countries 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