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" ... Nonetheless, while a tethered drone in theory could remain airborne as long there’s power left in its ground-based generator, in practice a typical small drone’s motors and other components are prone to overheating and/or vibration damage after enough hours of continuous flight. Those problems grow more acute for drones designed to carry heavier payloads up to higher altitudes. ... "
" ... The authors note that it's possible that as the COVID-19 pandemic has shown that work can be effectively performed remotely, knowledge-intensive industries won't be so tethered to locations where expertise can cluster together. It's a logic that has long existed, however, and it's unlikely that innovation will become completely detached from physical space. Various research has shown the importance of physical proximity, even at a time when digital technologies shorten such distances. ... "