By extension, should truly rational entities never let anyone know how rational they are?
No, they should sometimes not let people know that. Sometimes it is an advantage—either by allowing cooperation that would not otherwise have been possible or demonstrating superior power and so allow options for dominance.
By extension, should truly rational entities never let anyone know how rational they are?
No, they should sometimes not let people know that. Sometimes it is an advantage—either by allowing cooperation that would not otherwise have been possible or demonstrating superior power and so allow options for dominance.