For me it depends on what kind of conversation it is. I'll gladly exchange pleasantries with strangers and even have brief conversations when it's clear what the boundaries are--for example, someone in line behind me at the supermarket, where it's understood that as soon as I've checked out, I'm leaving.

Where I draw the line is when strangers try to push a conversation beyond clear boundaries, or try to push a conversation in a situation where the boundaries aren't clear and they can try to manipulate them. That's what would have put me off in the "First Contact" episode in the article.

For me it probably also helps that I'm an introvert and I have no problem just ending a conversation and going back to whatever I was doing. For example, at the point where the woman started asking follow-up questions, I would have said something like "I'm not really familiar with those places, sorry", and gone back to what I was doing.