Using a specific example, explain why data scientists need domain knowledge to do their jobs well. Take a look at this article for inspiration. More data are being collected and stored than ever before. But data are not useful in and of themselves. Data are useful because of the information that can be gleaned from them using analytical techniques. Provide an example of how data (big or small) has led to a real change in our understanding of something. Note: this question might require a bit of Internet research.
