Physics (3) Economics (3) Cities and towns (3) modèle (2) Pruning (2) Communication (2) Adaptation (2) Terms and phrases (2) Observations (2) Terms and phrases (2) Observations (2) City dwellers (2) Urban geography (2) Notions (Philosophy) (2) Time (2) Statutes (2) Profit (2) Occupations (2) Learning (2) Imitation (2) Example (2) Diminishing returns (2) Cycles (2) Concepts (2) Competition (2) Cities and towns--Growth (2) Breast (2) Biology (2) Adoption (2) Ability (2)