Average and total utilitarianism

Average and total utilitarianism (also called averagism and totalism) are variants of utilitarianism that seek to maximize the average or total amount of utility; following Henry Sidgwick's question, "Is it total or average happiness that we seek to make a maximum?". They are theories of population ethics, a philosophical field that deals with problems arising when our actions affect the number or identity of individuals born in the future.