It isn't trivial to find a decision-theoretic foundation for game theory in which an agent's coplayers are a non-distinguished part of the agent's environment.

we'll nail the sophist to it, if we can get him on that charge;

The son of a former houseowner in the Stumpergasse told me that the young Hitler would go every morning to a Jewish distiller (Branntweiner) near his flat to have a small breakfast there consisting always of ‘a tea and a kipfel’.

“I knew she was a Christian, but she didn't shove her beliefs down my throat. […]