I'm always fascinated by these tricks of game theory.

e.g. in business school, the dean of the undergraduate school had this story:

"When I was a practicing lawyer working on wills and estates, people would often ask me to cut someone completely out of their will.

I would always say that a better option was to write something like 'To my daughter Susan, I leave $1,000. She always said that she wanted to be financially independent from me so this is an amount to show her I lover her.'

Clients would always think this would send the wrong message and I would replay:

'No, no. If Susan fights the will and says she should have gotten more, the judge will say: but she clearly left you something and pointed out that she loved you AND took your wishes into account' "

I wish there was a book or collection of these types of tricks to study.