You can ask people what troubles them, you can even ask them what’s on their mind but you will be met with the standard answer “Nothing.” they deny their thoughts, or rather they deny the questions of a random passer by as sincere because who is this random person and for what earthly reasons could they have a genuine interest in any body else problems.
Is the random making polite conversation? Perhaps they are passing the time? Maybe they are after something to allow them to talk about themselves? From the perspective of the person being asked the question any of these could be true and you can’t blame a person for thinking that way. As our technology has evolved we have devolved, we’ve lost the art of communication and unless it’s a face less like on Facebook we no longer see any value in speech.
I’m sure that one day we will learn what it means to be genuine again.