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"With each interaction, Alexa is training to hear better, to interpret more precisely, to trigger actions that map to the user's commands more accurately, and to build a more complete model of their preferences, habits and desires. What is required to make this possible? Put simply: each small moment of convenience - be it answering a question, turning on a light, or playing a song - requires a vast planetary network, fueled by the extraction of non-renewable materials, labor, and data. The scale of resources required is many magnitudes greater than the energy and labor it would take a human to operate a household appliance or flick a switch. A full accounting for these costs is almost impossible, but it is increasingly important that we grasp the scale and scope if we are to understand and govern the technical infrastructures that thread through our lives. III The Salar, the world's largest flat surface, is located in southwest Bolivia at an altitude of 3,656 meters above sea level. It is a high plateau, covered by a few meters of salt crust which are exceptionally rich in lithium, containing 50% to 70% of the world's lithium reserves. 4 The Salar, alongside the neighboring Atacama regions in Chile and Argentina, are major sites for lithium extraction. This soft, silvery metal is currently used to power mobile connected devices, as a crucial material used for the production of lithium-Ion batteries. It is known as 'grey gold.' Smartphone batteries, for example, usually have less than eight grams of this material. 5 Each Tesla car needs approximately seven kilograms of lithium for its battery pack. 6 All these batteries have a limited lifespan, and once consumed they are thrown away as waste. Amazon reminds users that they cannot open up and repair their Echo, because this will void the warranty. The Amazon Echo is wall-powered, and also has a mobile battery base. This also has a limited lifespan and then must be thrown away as waste. According to the Ay

"I will tell you without ceremony what the future actually holds for the inhabited terrain of North America. The big cities will have to contract severely and the process will be fraught and disorderly. The action will move to the small cities and small towns, especially the places that have a meaningful relationship with farming, food production, and the continent's inland waterways. The suburbs have three destinies, none of them mutually exclusive: slums, salvage, and ruins. The future has mandates of its own. If we want to remain civilized, we will be compelled to return to a landscape composed of relationships between town and country, at a scale that comports with the resource realities of the future. These days the failure of American imagination, especially at the university level, is epic."

"We use the word "authority" to mean lots of things - police and state actors are "the authorities", an expert may be "an authority on the matter, etc. But I want to suggest that it is very useful to think of authority as a characteristic of information in a social context. In particular, information is "authoritative" when some community of people to coordinate upon it and behave as if it were true, regardless of whether or not the information is in fact true, or even of whether the individuals doing the behaving personally believe it to be true. If information is authoritative, members of the community behave as if the information is true even despite strong, often opposing interests in the question. When we claim that someone "is an authority", we are claiming that the information they produce will (or should) alter behavior within some human community. Authority subsists in the relationship between information and behavior in a social context."

Groups of firms often achieve a competitive advantage through the formation of geo-industrial clusters. Although many exemplary clusters are the subjects of case studies, systematic approaches to identify and analyze the hierarchical structure of geo-industrial clusters at the global scale are scarce. In this work, we use LinkedIn's employment history data from more than 500 million users over 25 years to construct a labor flow network of over 4 million firms across the world, from which we reveal hierarchical structure by applying network community detection. We show that the resulting geo-industrial clusters exhibit a stronger association between the influx of educated workers and financial performance, compared to traditional aggregation units. Furthermore, our analysis of the skills of educated workers reveals richer insights into the relationship between the labor flow of educated workers and productivity growth. We argue that geo-industrial clusters defined by labor flow provide useful insights into the growth of the economy.