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LESSON 5 · The Math of Choices

Spot One This Week

These games hide in plain sight. Watch for moments where your gain quietly costs the group:

  • Office email: one more "reply all" feels free to you but steals everyone's attention. If all do it, the inbox drowns.
  • Shared spaces: nobody wipes the office fridge, since your effort alone barely helps — until it becomes unusable.
  • Crowded gyms: each member hopes others skip the workout so the machines are open.

Find one this week and try Tit-for-Tat: open with cooperation, answer betrayal in kind, forgive the moment it stops.