Richard Wilkinson : Evidence confirms that inequality causes social problems . The police , prisons and public services needed to defend ourselves against these problems are expensive and often not very effective . Comment: When there 's more inequality , people become desperate for higher social status , he says . Wilkinson : Children trained either for world of constant struggle or for cooperation .
Richard Wilkinson : Evidence confirms that inequality causes social problems . Comment: When there 's more inequality , people become desperate for higher social status , he says . Wilkinson : Children trained either for world of constant struggle or for cooperation .