This book disproves the common misconception that humans behaviour is fundamentally rational. The author first shows how irrational human behaviour can be and then shows that the irrationality is actually systematic and hence predictable. This allows various parties e.g. cars salesmen to exploit peoples irrationality to their own ends.
The predictability of human irrationality is a useful tool for explaining why users of computer software do not behave as expected by the software’s designers. This book should be read by anyone who is involved with the design, construction and maintenance of software used by humans.