Mikhail Zhilkin, a data scientist at Arsenal FC who has previously worked on the wildly popular Candy Crush mobile games, shares his strong views on some of the best and, more importantly, worst practices in data analytics and business intelligence. Why data science is hard, what pitfalls analysts and decision-makers fall into, and what everyone involved can do to give themselves a fighting chance—the book examines these and other questions with the skepticism of someone who has seen the sausage being made.