The book by an authoritative expert in the field of computer technology is a call for sanity. All her adult life, Meredith Broussard has heard that technology will save the world, but today, while she continues to admire it and participate in its creation, she is not so optimistic about the future. The general enthusiasm for the use of computer technology, in her opinion, has already led to a huge number of unfinished solutions in the field of digital systems design. Speaking against techno-chauvinism and social illusions about the saving role of technology, Broussard goes on a journey through the computer world: risking his life, he gets behind the wheel of an experimental car with autopilot; uses artificial intelligence to figure out why students fail standardized tests; uses machine learning to calculate the likelihood of survival of Titanic passengers; how a data journalist creates a program to find fraud in the financing of US presidential candidates. Only by understanding the limits of computer technology, Broussard argues, can we use it to make the world a better place.