A.I ( Artificial Intelligence ). It took >150 years for “our great grandparents “ to “imagine” how could we “flying” on the sky. It probably took > 30 years for our parent to “imagine” WT.. is “Internet” useful for?!.. AND we probably can’t “imagine” that A.I robot could be each household’s “housewife/househusband” in just 5-10 years!?”..