Destructive updating theory
When compared to soft, heterogeneous or granular materials, hard and homogeneous materials are able to reflect sound waves more efficiently.
In ultrasonic flaw detection applications, metal and air boundaries are commonly seen, wherein the reflection coefficient reaches 100%.
But what do we miss in this constant push to the future?
In Updating to Remain the Same, Wendy Hui Kyong Chun suggests another approach, arguing that our media matter most when they seem not to matter at all—when they have moved from “new” to habitual.
When these waves bump into a boundary having a different medium, they are transmitted back.
This is the principle behind ultrasonic flaw detection.
What would happen, Chun asks, if, rather than pushing for privacy that is no privacy, we demanded public rights—the right to be exposed, to take risks and to be in public and not be attacked?