I would stay away from the term sociopath because whether or not someone is a sociopath depends entirely on their feelings. And it's quite clearly impossible t

I would stay away from the term sociopath because whether or not someone is a sociopath depends entirely on their feelings. And it's quite clearly impossible to know the emotions of another person and whether they experienced guilt/remorse/regret/empathy for their actions, regardless of their facial expressions. I've also read the Nuremberg Diary. That book, and Hannah Arendt's famous phrase "banality of evil" have influenced my thinking in this area. People who do very bad things are not necessarily "less than human" or "exceptionally inhuman," although it's easy to make that assumption. Anyway, I think the concept of a sociopath is entirely theoretical. Until we can scientifically determine what someone is feeling by hooking them up to a machine and reading their emotions as we present them with various scenarios (i.e. a Voigt-Kampff device) then why even bother throwing around such a sensationalized word? As far as Madoff goes, I never understood the obsession with branding him as notably evil. He stole a lot of money from a lot of people and lied to a lot of people. But the notoriety of that case has more to do with him being an upstanding member of society i.e. "the last person you would expect" (also the scale of the fraud). I don't believe his theft is morally more egregious than millions of other thefts that are committed every day.