Throughout history, note makers played a significant role in idea emergence by reading others' works and integrating various fields into their own notes. Charles Darwin, for example, developed his theory of natural selection by making notes on different subjects such as language evolution, variations of roses, and population factors. This process of compiling diverse information eventually led to the emergence of his groundbreaking theory. The concept of idea emergence suggests that individuals gather numerous ideas from various sources, allowing certain key insights to continuously influence and contribute to their major works over time.