What if they dropped ten thousand dollars? Would you run up to them and give it back? But then why would they be walking around with 10k? What kind of container was it in? If it was a paper bag and on the side it said “money from bad things”, does that mean you definitely should or shouldn’t give it back? Should you definitely get it back because otherwise, you might get caught up in some scary stuff? But then how would they ever know that you’re the one who had it? Was there a security camera somewhere that caught you grabbing the bag? Maybe you should give it back then since you don’t want to end up in a spectacular gun battle at the end of the film that is your life.