Group experiments in emergent properties from simple rules

http://dynamics.org/Altenberg/

- Have everyone adopt the same movement rule, among the rules below.
- Have each person randomly pick a movement rule.
- Split the group into persons adopting specific selections of the rules.
- Do perturbations of the above after some kind of ``attractor'' has been approached.
- Have a single person change their rule.
- Add a new person to the group.
- Remove a person from the group.

- Single person target
- Pick one person and walk toward them.
- Pick one person. Move toward them if they are stationary. If they start to move, stop.
- Pick one person. Move toward them if they are stationary. If they are moving, move.
- Pick a person. Stand next to them on their right.

- Two person target
- Pick 2 people and walk to their midpoint.
- Pick a ``guardian'' and a ``foe''. Position yourself so that your guardian is halfway between you and your foe.
- Pick a ``guardian'' and a ``foe''. Stand by your guardian with your guardian between you and your foe.
- Pick 2 people and keep an equilateral triangle with them.
- Pick 2 (or
*n*) people and go from one to the other back and forth. - Pick 2 (or
*n*) people. Start with one. Spin in the direction they are facing. When you see the second person, spin in the direction they are facing, etc. - Pick 2 (or
*n*) people. Start with one. Spin in the direction they are facing. If you make eye contact, stop moving. - Pick 2 (or
*n*) people. Start with one. Spin in the direction they are facing. Spin in the direction opposite to the way they are facing.

- Three person target
- Pick 3 people. Which ever 2 of them are closest together, go to the mid point between them.
- Pick 3 people. Which ever 2 of them are farthest apart, got to the mid point between them.

- Multiple person target
- Go to a person or cluster of people.
- If 1 person, grab onto them and keep moving;
- If 2 people, grab one. The other departs.
- If 3 people, stay with them to make 4 people.
- etc., odd, even, odd, even; or try binary fission.

- Divide the group into 2 visibly marked types.
- Type I attaches to others of Type I.
- Type II stays near, but never at (say always 5 feet away from) any others.
- People then mill about.

- Divide the group into 2 visibly marked types.
- If Type I is being pursued, they go towards a Type I.
- If Type I is not being pursued, they go away from the nearest Type II.
- Type II goes to Type I.

- Join the smallest cluster of people. If the cluster changes size before you get there, ignore this. Once you arrive at the cluster, survey the other clusters; if there is a smaller cluster than the one you are in, go to that cluster.

- Options:
- Remove one person from the group. Repeat the above, note any differences.
- Survey the clusters as you move, and change direction mid course if the cluster you were going to is not longer the smallest cluster.

- Pick
*n*people:- Go from one to the next in a cycle.
- Start with one. Spin in the direction they are facing. When you see the second person, spin in the direction they are facing, etc.
- Start with one. Spin in the direction they are facing. If you make eye contact, stop moving.
- Start with one. Spin in the direction opposite to the way they are facing.

- Go to a person or cluster of people.

- Divide the group into those who will move quickly and those who will move slowly.

- Number of persons determining the movement.
- Stationary vs. moving
- Moving toward vs. moving away
- Rotation vs. translation movement.

- Attraction vs. repulsion
- Location relative to you and the persons.
- Location relative to the persons.
- Face position.
- Eye position.
- History of movement.

- Move
- To a point
- Away from a point
- Rotate in a direction

- Stop