The document discusses the ethics of algorithms and why people care about them. It notes that algorithms can lead to error, failure, and discrimination. They can also be used for manipulation and "big-nudge". While algorithms are presented as objective, the document states there is no such thing as an objective algorithm. It further discusses how algorithms are used for decision-making about people without their input ("for us, about us, or with us") and can be opaque, obscure and complex. The growth of technologies like the Internet of Things means all aspects of life are trackable and optimizable by algorithms, representing opportunities for business but also requiring consideration of their impacts and discoverability.