The question of whether local economies are sustainable and better than new technologies is a complex one, and there is no simple answer. Each approach has its own strengths and weaknesses, and the choice between them will depend on the specific context and circumstances.

Local economies can provide a number of benefits, including supporting local businesses, promoting economic diversity, and reducing the dependence on large corporations. By relying on local resources and expertise, these economies can be more resilient and better equipped to weather economic disruptions. They can also help to promote community cohesion and provide a sense of place.

On the other hand, new technologies can bring benefits such as increased efficiency, lower costs, and greater accessibility. They can also support innovation and drive economic growth, and provide new opportunities for entrepreneurship and job creation.

In terms of whether going back to being primitive is the solution, it's important to note that there is no one-size-fits-all answer. A balance between local economies and new technologies can offer the best of both worlds, by combining the strengths of each approach. For example, local economies can support sustainable development by utilizing the resources and knowledge available in the local community, while new technologies can provide access to global markets and increase productivity.

Regarding the use of vernacular, it is not necessarily a thing of the past or regressive. Vernacular architecture, which refers to buildings and structures that are designed and built using local materials and techniques, can offer a number of benefits such as low cost, low environmental impact, and cultural relevance. Vernacular architecture can also serve as a valuable source of inspiration for contemporary design, and can help to preserve cultural heritage. However, the use of vernacular should not be seen as a replacement for contemporary design, but rather as a complementary approach that can offer valuable insights and perspectives.

Vernacular economies play an important role in built environments. Vernacular economies are based on the local conditions, cultures, and resources of a given area. They often involve small businesses that focus on providing goods and services to local communities, which can help to foster connection and collaboration between people in the area. In terms of built environments, vernacular economies can help to ensure that the design and function of built spaces align with the needs and preferences of the local population.