Russell allows for fallibility of acquaintance due to false impressions acquired in some acquaintance relations, and he argues that these do not negate the much greater number of accurate impressions that result in acquaintance based on truths. To support this position, Fumerton offers examples of error such as misidentifying a particular shade of color as another, and he suggests that acquaintance relations should not be viewed as guarantees of, but only as representations of probabilities of, truth relations.
