We guess as we read, we create; everything starts from an initial error; those that follow (and this applies not only to the reading of letters and telegrams, not only to all reading), extraordinary as they may appear to a person who has not begun at the same place, are all quite natural. A large part of what we believe to be true (and this applies even to our final conclusions) with an obstinacy equalled only by our good faith, springs from an original mistake in our premises.