
reference(s) -- payoff(s) / challenge(s) / game(s) / math(s) / plan(s) 
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media
/ scribble
/ utopia
/ design
/ fun
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serious / face / experiment(s)
- David Goforth -- Topology of 2x2 Games
- Alex Lowy & Phil Hood -- The Power of the 2 x 2 Matrix: Using 2 x 2 Thinking to Solve Business Problems and Make Better Decisions
resource(s) / reference(s) / etcetera / norm(s)