You're walking through the park. You pass under a bridge, when you see a black satchel. Curious, you open it. It's filled with money. There's a note. It reads "Here's your damn ransom! $10,000 in small bills, like you asked. Now stop blackmailing me about my affair. My wife doesn't need to know. Please". What do you do?
Close up the bag and walk away. I'm not getting involved in this
Take some of the money. No one would know it was me. You know someone else will find this bag and take all of it, so I may as well get some
Take all the money. His wife should find out about this guy's infidelity
Not only do I take all the money, but I leave the bag and change the note to say "Fuck you. I'm not giving you a single penny. I dare you to tell my wife, you bastard"