Sometimes, a simple statistic is compelling, irrefutable, persuasive enough for us to be in immediate agreement with the argument or prediction that the statistic is supporting:

“Japan’s low birth rates mean that what once was a staple of Japanese family – taking care of one’s grandparents and great-grandparents – will no longer be a viable model at the scale the nation needs. There will not be enough grandchildren.”

Source: Alec Ross, The Indusries of the Future

And hence, there is a need for technological advancements in fields including robotics and assisted living.