It's the title of a book by Pierre Bayard, a professor of French Literature in Paris, who suggests that the two most common forms of reading are skimming and sampling. He maintains that it is perfectly possible to have a passionate conversation about a book without having read it. His aim is to stop people feeling guilty that they don't read.
His top tips, taken from an article in The Times
How to talk about a book you have never read:
Avoid precise details. Put aside rational thought. Let your sub-conscience express your personal relationship with the work.
How to review a book :
Put it in front of you, close your eyes and try to perceive what may interest you about it. Then write about yourself.
How to discuss a book with its author:
Stick to generalities, remain ambiguous and say how much you like the work.
Another idea is to have a set of abbreviations - UB: book unknown to me; SB: book I have skimmed; HB: book I have heard about; and FB: book I have forgotten, to be included when citing books.
I love the whole concept. Skimming and sampling got me through almost every exam I ever did....
It's particularly refreshing that this comes from a French person. I cannot for one minute imagine that this method would go down well in the French education system which is (or used to be) very keen on the rote system of learning.
NB I haven't read his book.