Good Touch Principle（习题1）

问题

• What action should Alice perform?

题解

• Alice needs to give a Play Clue to Bob's blue 3 before it is discarded.
• If Alice clues blue, then it would focus the blue 3, but the blue 2 would be duplicated (because it is already played on the stacks).
• If Alice clues number 3, then it would focus the blue 3, but it would also touch the red 3. The red 3 is useful to the team in the future, so this is a good thing.
• Thus, Alice should clue number 3 to Bob.