I had to practice keeping my mouth shut recently. When I was playing Pandemic Legacy with two parallel groups. One group finished the game while the other was still in April.

I told them: “Look guys, I’ll play as best I can and I will participate in the tactical discussions. But for the more strategic elements (upgrades, panic level, etc etc) I’m going to have to mute myself because I know too much about what is coming.”

It was really hard and an exercise in poker-face.