loses 0.50 cents for choosing sell when the coin lands heads, and gains 0.50 cents for choosing sell when the coin lands tails. Well, it's pretty easy to see that as Player two, your strategy in this subgame should now change as well. Now, you should be guessing heads with 75 percent probability and tails with 25 percent probability. But you can see what's happened here is that, by changing the expected value of the sell action, we have affected what the optimal strategy is in the play subgame. Even though the sell action is not