Awesome article! In my experience, when dealing with personality-disordered people, it's best to just block them. No point interacting with them, as it won't go anywhere. In the so-called ''real life,'' it's best to ''be like water'' and meander between various personality types. It's also good not to classify people as difficult, psychopaths, and so on, just because it's convenient. In essence: use your best judgment, keep the healthy relationships which foster growth and ignore the others. If you can't ignore, then just nod along. Arguing won't work with arrogance and ignorance combined. You can argue where it matters and in these cases it's mostly pointless. I like proxemics, too; it shows social status/power differentials. When two people are walking on the sidewalks, who steps aside - and why? Fascinating sociological questions.