(Have no idea what this is in reference to? Read my earlier explanation.)
You are sitting in an empty bar (in a town you’ve never before visited), drinking Bacardi with a soft-spoken acquaintance you barely know. After an hour, a third individual walks into the tavern and sits by himself, and you ask your acquaintance who the new man is. “Be careful of all that guy,” you are told. “He is a man with a past.” A few minutes later, a fourth person enters the bar; he also sits alone. You ask your acquaintance who this new individual is. “Be careful of that guy, too,” he says. “He is a man with no past.” Which of these two people do you trust less?
Frankly, the weirdo who keeps telling me to be suspicious of everyone else is who I trust least of all.