During my lesson, I learned about air traffic delay causes, such as why plane delays before boarding instead of when it is staying in the air. I learned about data clusters, and how machines have difficulties when trying to group up clusters. I also learned that excess fuel is loaded into planes to ensure safety, and that flight process recorders were added to ensure future flights become more stable and safer. There are two flight process recorders in a plane, one is black, and its data can be shown when the plane arrives at the terminal, while the other one, the red one also contains data about the flight, but it is only used during accidents, while no one can reach it, its data can be sent to the terminal wirelessly. I have learned that machine learning has weaknesses and that we should not heavily rely on computers. I think that learning all this will be helpful to me when I grow up because I now know the basic knowledge of data science and air transportation systems.