Why is substantive/domain expertise important for data scientists? 1. It helps them manage the work of non-data science employees at their company. It helps them to know what constitutes value in their field and to implement their insights. The ability to identify domain-specific value and take steps to implement insights give critical context and direction to data science work. 2. 3. 4. It helps them negotiate a better salary.It helps in case they are called on to perform other functions, such as design a marketing strategy for their company