Robots will not rule the world, but they will care for rulers and the ruled after they retire. A cyborg revolution in the field of elderly care has already started. In Disney’s film Big Hero 6, an inflatable robot named Baymax provides medical care. This personal companion based in San Fransokyo, a San Francisco-Tokyo hybrid, is edging closer to becoming a reality. 

Japan has the most rapidly ageing population in the world. Low birth rates have continued for three decades. Almost a third of the population is older than 65. To help look after them, Japan needs to increase the number of care workers almost sevenfold over the next decade from the current 1.5-million. Paid carers would then constitute more than a tenth of the workforce.

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