In terms of class or societal differences, it has long been recognized that a "social inequality of death" exists whereby members of the least advantaged socioeconomic classes tend on average to have higher death rates than members of middle and upper socioeconomic classes within the same society. the reason is that those who are better off economically are likely to have advantages of better

Those who are better off economically are likely to have advantages of better living standards.

Explanation:  With better living standards, upper economic classes have more acess to education, health systems, better jobs, etc. In this way, the least advantaged classes, that have difficult or no acess at all to such services, are at lose. Without education, the jobs are worse and worse. Being not able to have a well-paid job, a person can't afford health services, therefore resulting in higher death rates among them. That is the idea behind the "social inequality of death" theory.

- "ethical issues. deception – the participants actually believed they were shocking a real person and were unaware the learner was a confederate of milgram's. however, milgram argued that “illusion is used when necessary in order to set the stage for the revelation of certain difficult-to-get-at-truths.” "

- "milgram's work was conducted in the early 1960s before the current.the studies ignited a debate about the ethical treatment of participants. what appear to be dangerous, if not deadly, electric shocks and the by today's ethical standards, many questions about the research have gone unanswered."