Plants are phototropic.  Over time, they orient themselves according to the light source in their environment, bending either toward the light or away from it.

Many people are power-tropic.  They bend toward (or away from) those that they perceive are in power, and reflexively take on (or react against) their characteristics.

Seeing this phenomenon can help us understand our own motivation, the motivation of others, and, then, how to shape culture in a just way.