GAMES PEOPLE PLAY
Harri Ehtamo
Aalto University
Espoo, Finland
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” ...Without stroking babies could not survive. A
stroke, a cry, a smile, a babble are fundamental
units of social action by which babies learn to play
games.”
” The principle which emerges here is that any
social intercourse whatever has a biological
advantage over no intercourse at all.”
— Eric Berne, M.D., 1964
Do not say ’I am sorry’
” Tonight you can embarras my wife, ruin the
furniture, and wreck the rug, but please don’t say ’I
am sorry’.”
— Eric Berne, M.D., 1964
The problem of the commons
Hume, D. 1739; Hardin, G. 1968
𝑁 farmers graze their goats on the village field.
Problem:
The total profit for farmers in Nash equilibrium is
lower than in the joint optimum;
The total number of goats in Nash equilibrium is
greater(!) than in the joint optimum.
Games studied in SAL
First 15 years:
Optimal controller design by game theoretic methods
Contracting in fisheries management
Collusion in transboundary air pollution problems
Cooperative incentive equilibrium in fisheries management
Intertemporal bargaining and electricity exchange
Mechanism design of electricity tariffs
”Pareto hunting”
Numerical methods for pursuit-evasion games
Computational complexity of homicidal chauffeur game
Games studied in SAL
Last 15 years:
Strategic interaction in energy markets
Convergence of Walras tâtonnement process
Learning models in mechanism design
Cournot/Stackelberg duopoly games with cheap talk
Cooperative outcomes in repeated 2x2 matrix games, their Hausdorff
dimension and computational complexity
Spectrum access models, auctions and allocation mechanisms for
cognitive radio
Cooperative and non-cooperative behavior of pedestrians in
evacuation of a corridor
Spatial games in exit congestion
Why and when pushing behavior
emerges in exit congestion
𝑻𝑨𝑺𝑬𝑻
𝑻 < 𝑻′
EXIT
A polymorphic pattern of 3180 agents;
𝑻𝑨𝑺𝑬𝑻 = 𝟐𝟖𝟎𝟎𝒔
EXIT
Matti Kujasalo, 2013
” The principle which emerges here is that any
social intercourse whatever has a biological
advantage over no intercourse at all.”
— Eric Berne, M.D., 1964