Coining

1. The Chalk Effect: The more you divide, the less there is to use.
2. The Dollar Store Effect: When things are cheap, you tend to buy more, resulting in a higher total-cost. 
3. Social Gravity: People tend to detour towards a stationary person (and, sometimes, another walking person), while walking a straight ' imaginary ' line, then, slowly-resume the straight-line-walk after they've passed the stationary person.