So I thought it'd be nice to have a thread that would have it all in one place, here's an interesting bit about it showing up in architecture:
When we walk into a Gothic cathedral, for example, we invite the building to inspire us. We understand and accept that the huge, pointed arches symbolically reach to the heavens ... When we enter, the external world disappears and we are transported into another. We lose our sense of bearing and become vulnerable to the second battery of psychological tricks.
These structures utilize more subtle design features that only an art-history student would be able to discern. Most of us are unaware, for example, that the shadowy band of arches and columns beneath the highest set of windows is called the "triforium," or that its architectural purpose is to evoke fear. It is an optical trick: Filled with slightly hidden doorways on inaccessible balconies--often leading nowhere at all--the triforium draws our eyes but provides us with no answers. It is meant to remind us of secret cabals within the church, and the mysterious knowledge they possess.
The miraculous architecture and its more subtle coercive cues quite forcibly convince us of the power of the religious institutiou to which it was dedicated.
In the Middle Ages, the coercive power of architecture was so well appreciated, in face, that builders formed secret societies dedicated to keeping these technologies to themselves. Very few people understood how a vaulted arch was actually constructed, or why it defied gravity. Architects and the institutions they served maintained their authority by keeping this information guarded--the same way technology companies protect hi-tech secrets today.