This book was terrifying as a person who, in the world of the book, would in 8 years become a "dispensable person" since I don't have any children. Set in some future Sweden, people over the ages of 50 (for women) and 60 (for men) who are not "needed" by the demands of a child or an elderly parent in need of care or who are not contributing to the overall financial growth of the country are categorized as "dispensable" and taken to biological materials reserve units. Now this may sound preposterous in a summary, but the author does an excellent job of explaining how this works and how the mores of such a society impact these more solitary people. Many of them are artists and writers who have been more dedicated to their work and have uncertain incomes. It is quite an interesting exploration of what it is to be "necessary" and who and what defines which people are "necessary" in a society.