I have the book Obedience from Milgram at home, although I just skimmed through it. I think the situation is similar, Zimbardo would probably do more experiment

I have the book Obedience from Milgram at home, although I just skimmed through it. I think the situation is similar, Zimbardo would probably do more experiments as well weren't the first result so horrific. What I am a bit worried of is that we are not able to replicate (because of the ethical problems), in one way or another, results of these studies. How can future generations become educated about these problems? Especially if we cast doubt over their results. Are our descendants doomed to figure out these things the hard way?