Sir Philip Sydney Game
Wounded officer has to choose between donating his last water to a begging wounded soldier or keep it for himself
Sender strategies
- Only beg when in need
- Always beg regardless of need
- Never beg
Receiver strategies
- Only give to senders when they beg
- Always give to senders
- Never give to senders
Two ESSs, assuming some relatedness
- Sender never begs and receiver ignores
- Sender only begs when in need, and receiver only gives in response to begging, requires a cost to begging, costs covary with r