This chapter introduces the theme of the book and tells the reader what to expect. It explains that the aim of the book is not to make you a great philosopher, but to make you sensitive to the importance and very interesting nature of questions around the ethics of emerging technologies. It tells you what ethics is, and what we may understand with ‘emerging technologies,’ and explains what is at stake in the chapters that are to follow by discussing some concrete technologies, from ultrasound, via cryptocurrencies, to the Cambridge Analytica scandal.