i have one coin and you have one coin. we both throw and if we get: heads heads - i pay you 6 euro tails tails - i pay you 4 euro th, ht - i get 5 euro from you for a fair coin the expected return from this game is 0. assume i can modify probability of my coin to whatever i want, but i have to tell you and then you can modify yours. can i skew the expected return in my favour?