It depends on context. If I meet someone because of a common interest or thing we are doing (we are at the gym, I recognize them as a regular, and say hi, or wh

It depends on context. If I meet someone because of a common interest or thing we are doing (we are at the gym, I recognize them as a regular, and say hi, or whatever) then yes I'll have some light conversation. A totally random person walking up to me and starting to talk? No, that's weird and I'm immediately at yellow alert at minimum, if not searching for the nearest exit.