What advantage have the wise over fools?
Take a container of mixed nuts, shake it and examine the contents. The chances are that the largest nuts, Brazil nuts for example, have risen to the top.
This phenomenon is called the Brazil nut effect and is known to depend on a number of factors, such as the container size and shape as well as the frequency and amplitude of the shaking. However, the general idea is that the shaking process creates voids that smaller, but not larger, particles can drop in to. […]
Carsten Guttler [et al.] have performed standard Brazil nut effect experiments […] on an A300 Airbus flying parabolic arcs to simulate gravitational forces on the Moon and on Mars.
