Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In science, a process that is not reversible is called irreversible. This concept arises most frequently in thermodynamics, as applied to processes. Irreversibility is also used in economics to refer to investment or expenditures that involve large sunk costs.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.