wicked problem
厄介な問題
意地悪な問題
collaborative information seeking
Collective action problem
Competing harms
complex question
Drama theory
Encyclopedia of World Problems and Human Potential
Hard problem of consciousness
Ludic fallacy
morphological analysis
Nonlinear system
Post-normal science
Problem solving
small is beautiful
social issue
Societal collapse
Soft systems methodology
Structured systems analysis and design method
Systems theory
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