This book is a collection of serious and funny questions from readers of the author's column of the famous writer Dan Ariely and his answers to them. The author, a leading expert in the field of human rationality and irrationality, provides unexpected and paradoxical answers to everyday mysteries from the point of view of behavioral economics. Many questions are supplemented and illustrated with funny comics by William Heifeli, illustrator of The New Yorker. This is an easy and enjoyable book with a lot of stories and anecdotes that you will certainly enjoy. Published in Russian for the first time.