Will androids save or destroy our economy?
Primitive androids i.e. fully mobile computers with Watson-like intelligence will have visual and auditory acuity; they will serve as caregivers for the baby boomers.
Within 20 years they will have the diagnostic skills of a Harvard-educated doctor, know the signs of a stroke, heart attacks in men and women which present differently, diagnose other health issues, call 911 sooner and save lives. They will do many of the tasks that a care giver would do e.g. monitor meds, be alert, never tire or get bored and they will regale their patients with everything from idle banter to bawdy limericks.
Within 50 years mass-produced fully “human” androids speaking all languages will cost less than $100,000; at this time they will give shots, draw blood, change IV's, and do all the tasks an RN would other wise do. They will dominate care within intensive care units, greatly reduce hospital-borne diseases through superior hygiene, reduce medication errors and replace 4-6 full time staff i.e. work as an RN a 160 + hour work week and handle all administrative duties. They will also dominate nursing home care. Most repetitive jobs paying minimum wage can be done economically by androids.
Whoever controls android manufacturing in the 21st Century, a $10 trillion industry, will have an economic engine for a century; however, by the year 2100, there will be 100 million unemployed Americans, a permanent underclass.