A writer says many things, p₁…p_n, in the course of a book. In the preface she reasonably says that she knows the book contains mistakes, and is sorry for them. But given that she knows that p₁…p_n is the set of things she asserted, she now seems to have contradicted herself, by assenting to each of p₁…p_n and to the proposition that at least one of them is false. This is like asserting that Fred is tall and Jill is tall; Fred and Jill are the only people in the room; someone in the room is not tall. The structure is similar to the paradox of the lottery.