The biggest lesson I learned from this project can be summarised with the following quote: "data has a better idea". At the early stages of the process, I was sure I was going to create a radial chart. In fact, it’s one of the reasons I was learning D3.js—to design more complex visualisations with reusable code. But even though I had a cool visualisation in mind from the start, I had to abandon this idea after exploring the data. It just didn't work. It was a good reminder that when we design with data, data knows best. If you want to know more about the design process of this project, read this extensive blog post.