From the article: "While it is possible to design a system where resources, tasks, and the processor all exist on a single thread, Tokio chooses to use multiple

From the article: "While it is possible to design a system where resources, tasks, and the processor all exist on a single thread, Tokio chooses to use multiple threads. We live in a world where computers come with many CPUs. Designing a single-threaded scheduler would result in hardware underutilization. We want to use all of our CPUs."