Eva Smith is a universal symbol of oppression, representing the suffering of the lower classes and the victim of a patriarchal society and class inequality in early 20th Century Britain
Priestley uses the name "Eva" as a reference to Eve from the Biblical story of the Garden of Eden, symbolizing all humanity, especially women and those living in poverty
Eva's surname "Smith" symbolizes the common people of Britain, with the Inspector's message that "there are millions and millions of Eva Smiths and John Smiths" representing the forgotten or ignored individuals in society
Eva changed her name to Daisy Renton, reflecting her need to change her life direction to survive in a hostile society, leading to her descent into prostitution against her moral principles
Eva's death by suicide serves as a necessary indicator of the consequences of the characters' immoral actions, highlighting the impact of individualism and capitalist attitudes
Eva's suicide with disinfectant is a deliberate act, symbolizing cleansing and purification due to the sexual abuse and exploitation she endured, with Priestley using shocking imagery to associate her death with hell
Priestley uses graphic language to describe Eva's death to awaken the privileged upper class audience to the suffering of the working classes and to inflict guilt upon the characters for their actions
Eva's identity is never revealed to symbolize the oppressed working class people, encouraging the audience to reflect on their own actions and the impact of class inequality and capitalism
Priestley allows each member of the Birling family to describe their involvement with Eva, symbolizing the control the upper classes have over the working class
Eva is a victim of society's prejudice and individualism, portrayed as a victim of patriarchal society's classist prejudice and lack of social responsibility
Priestley uses Eva to expose the impact of individualism, forcing the characters to realize their actions have consequences and criticizing individualism
Eva is used to dismiss contemporary beliefs concerning the causes of poverty, countering the negative stereotype of the lower classes as merely the result of poor morals and laziness