Nick Davies's book, Flat Earth News, says "it is a very safe bet that there are mistakes in this book." Later, I met the author and reminded him of this quote, and asked him what the mistakes were. He replied that the only error he knew of was extremely minor. (He described the error, but I forget the details.) If we tweak this account just a little bit and deem the book to be free of mistakes, then we get the liar paradox -- the only mistake in the book is the assertion that there are mistakes in the book.