These successes paradoxically obscure the tremendous human costs of historically accumulated disadvantage that remain central to black Americans' lives.
Unfortunately this revelation about the hippopotamus apparently contradicts the fossil record, which suggests that the hippopotamus is only a very distant relative of the whale, not an ancestor.
Teachers and students alike have experienced the curious paradox that beginners, as a rule, tend to think too little about what they are doing because they think too much about what they are doing.