As Project Collision shifted due to the Covid-19 virus from a collaborative school project to an individual home project. Some big challenges that I faced were lack of communication and materials. At first, I was very stressed and didn’t know what to do when facing these problems, but eventually, everything works out fine and I was able to get back to work as normal. To overcome these challenges, I connected with other students by creating a WeChat group where we can help each other when needed. And for materials, I found some substitutes at home to replicated my original plans. Before this project, I used to think that testing wasn’t that important, and I should just design and create with my original plans. But now I think testing is a crucial part of making something because it allows you to improve more and more throughout each design. For example, when we just started brainstorming ideas for the parachute, I thought that the 48cm (diameter) parachute was the best and I should defiantly use it for the final design. But after some testing, I found out that the 48cm (diameter) parachute was too small and couldn’t provide enough drag for the package, so I used the 58cm (diameter) parachute instead.   Looking back on project collision, I learned that using data to support my decisions was very important. Mainly because it allowed me to make the most accurate and the best decision that is proven by facts. One area where data supported my thinking was when I decided to use the 58cm (diameter) parachute for my final design. I choose the 58cm (diameter) parachute because data shows that it provided more drag and made the package fall slower than all the other parachutes I made. Without data, I might have chosen the 48cm (diameter) which would have turned out a lot worse.