Abstractions are also related to complexity. As the interdependence between various systems increases, so does abstractions. Then those external dependencies a

Abstractions are also related to complexity. As the interdependence between various systems increases, so does abstractions. Then those external dependencies and services are updated independently and the corresponding abstractions need updating. Then external services are replaced and new abstractions are introduced. Most technologies are never "finished" and instead they are updated cause a domino effect of downstream updates.