Union Square

1. Groups

1.1. different groups of people interacting

1.1.1. Physical Mapping

1.1.1.1. graffiti as map

1.1.1.2. chalk

1.1.1.3. lights as map

1.1.1.3.1. interactivity

1.1.1.4. emotional mapping

1.1.1.5. mapping affordances

1.1.1.5.1. architectural mapping

1.1.1.5.2. contextual mapping

1.2. Farmers Market

1.3. Homeless

1.4. Drug Users

1.5. Artists

1.6. Vendors

1.6.1. Commerce

1.7. Who LIVES here?

1.8. Different modes of transportation

1.8.1. bus

1.8.2. pedestrian

1.8.3. subway

1.8.4. bike

1.8.5. scooter

1.8.6. cars

1.8.7. commercial vehicles

1.9. Spectators

1.10. chess-players

1.11. punk kids

1.12. vegetation

2. Interactive Friction

2.1. Congestion

2.2. problematic group overlaps

2.3. negotiation of spaces

2.4. physical boundaries

2.5. animals